boundary

US /ˈbaʊndəri, -dri/

・

UK /'baʊndrɪ/

B1 中級英檢高級

n.名詞邊界；界限

The train route follows the boundary of the city

n.名詞（運動場地的）邊界

The ball went over the boundary for a six.

n.名詞（抽象的）界限

The research pushes the boundaries of scientific knowledge.

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華萊士線——分隔兩個世界的隱形地理線 (The Invisible Barrier Keeping Two Worlds Apart)

09:25

華萊士線——分隔兩個世界的隱形地理線 (The Invisible Barrier Keeping Two Worlds Apart)

This is what scientists call a biogeographic boundary, the meeting point of two regions of biodiversity that are highly distinct.
這就是科學家所說的生物地理學邊界，也就是兩個高度不同的生物多樣性區域的交匯點。

景色美到像在拍電影！跟著我一起從格陵蘭島到阿拉斯加體驗北極之旅！ (My Arctic Voyage From GREENLAND To ALASKA | The Northwest Passage)

10:15

景色美到像在拍電影！跟著我一起從格陵蘭島到阿拉斯加體驗北極之旅！ (My Arctic Voyage From GREENLAND To ALASKA | The Northwest Passage)

("Ready To Fall" by Boundary Run)
("Ready To Fall" by Boundary Run)
("Ready To Fall" by Boundary Run continues)
(邊界運行 "Ready To Fall "繼續）。

卡斯卡迪亞斷層準備破裂：特大地震即將來臨 (The Cascadia Fault Is Ready To Rupture: A MEGA Earthquake Is Coming!)

10:58

卡斯卡迪亞斷層準備破裂：特大地震即將來臨 (The Cascadia Fault Is Ready To Rupture: A MEGA Earthquake Is Coming!)

This subduction zone marks the boundary where the Juan de Fuca Plate is being subducted beneath the North American Plate.
這一俯衝帶標誌著胡安-德富卡板塊俯衝到北美板塊之下的邊界。

緬甸地震為何如此強烈？ (What made the Myanmar earthquake so powerful?)

02:18

緬甸地震為何如此強烈？ (What made the Myanmar earthquake so powerful?)

Myanmar straddles the boundary between the vast Eurasian tectonic plate and the Indian plate that's moving slowly north, piling up stress on the rocks beneath.
緬甸橫跨巨大的歐亞大陸板塊和印度板塊之間的邊界，印度板塊正在緩慢向北移動，給下方的岩石造成了巨大壓力。

為什麼臺灣東海岸基本上是空的 (Why Taiwan's East Coast Is Basically Empty)

15:12

為什麼臺灣東海岸基本上是空的 (Why Taiwan's East Coast Is Basically Empty)

Flatland is scarce roads and railways must navigate rugged terrain and much of the area remains covered in dense Vegetation or protected national parks such as Kenting and Taroko But while Taiwan is very mountainous overall the western part consists of broad plains and rolling hills that provide ample space for cities infrastructure and perhaps most importantly Agriculture and more to that point the relatively flat land in the West allows for efficient transportation networks the construction of industrial hubs and the expansion of urban centers such as Taipei Taichung and Kaohsiung for example in 1999 Taiwan began construction of its first and only High-speed rail line linking the country's capital at Taipei with its large southern city, Kaohsiung Taiwan's high-speed rail which can travel up to 300 kilometers per hour can only really be built in flatter areas as Such nearly all of Taiwan's west coast is connected to its high-speed rail network Its east coast though It would be very challenging to make it work there due to the mountainous topography This kind of infrastructure keeps the country's population and industry focused on Taiwan's west coast, but it's not all about Infrastructure Taiwan is very prone to natural disasters But while it's a small island not all of Taiwan suffers these disasters in the same way frequent earthquakes and typhoons disproportionately impact the central and eastern regions You see the island sits at the boundary between the Philippine sea plate and the Eurasian plate making it highly seismically active In fact most of Taiwan's east coast between the cities of Taitung and Hualien Sits on the Chishang Fault a very active fault line that creates a large earthquake every few years in 2024 a magnitude 7.4 earthquake ripped through Hualien causing extensive damage and loss of life for the city and region While Taiwan's western cities can feel these same earthquakes They're rarely subjected to the full force in the same way as the country's east coast But also Taiwan's east coast routinely suffers from another devastating natural disaster large and powerful typhoons that form over the Pacific Ocean in 2024 alone Taiwan was hit by three powerful typhoons Typhoon Kong Ray the largest typhoon to hit Taiwan since 1996 sustained winds of up to 185 kilometers per hour this storm slammed into the country's east coast causing Extensive damage during a period of time when Taiwan was still trying to rebuild after its recent earthquake And while the whole country was under a typhoon warning It's the country's east coast that took the brunt of it suffice it to say natural disasters Don't make living in eastern Taiwan easy, but there are other economic factors at play as well One of the biggest factors is Taiwan's economic relationship with mainland China the west coast facing the Taiwan Strait is Strategically positioned to facilitate trade and transportation links with China Which remains Taiwan's largest trading partner with more than 40% of Taiwan's goods exported to its cousin country Major ports such as Kaohsiung Taichung and Keelung handle the vast majority of Taiwan's international trade Serving as gateways for goods moving between Taiwan and the global market this proximity has influenced Taiwan's economic development With industries clustering in areas that provide easy access to shipping routes and international markets the eastern coast in Contrast faces the wide open Pacific Ocean making trade and transportation routes less convenient This proximity to the mainland is reflected throughout history early Chinese settlers who arrived in increasing numbers during the Ming and Qing Dynasties primarily landed on the western side of the island the West's flatter terrain and fertile plains allowed for agriculture While the indigenous populations in the central and eastern mountains resisted large-scale settlement Even during the Japanese colonial era when major infrastructure projects such as railways and roads were developed the emphasis remained on the west coast due to its economic potential and Accessibility while the Taiwanese government has made efforts to develop the east including improved transportation networks such as the Sihua highway And the Eastern Line Railway the region remains far less populated than the West Hualien and Taitung the largest cities in eastern Taiwan are small compared to their western counterparts and function more as regional centers than major urban hubs Today Taiwan's west coast is home to about 90% of all of Taiwan's population Or a little more than 21 million people this would be led by New Taipei with 4 million people Kaohsiung with 2.8 million Taichung and Taipei with 2.7 million Taiwan with 2.1 million and Tainan with 1.8 million people by contrast Central and eastern Taiwan is home to just 2.5 million people smaller than most of Taiwan's west coast cities This region would be led by Hualien and Taitung with just 106,000 people each Guys, I'm literally walking through Hualien as I record this and let me tell you The eastern side of Taiwan is Incredibly beautiful, which is to say if you ever do visit Taiwan Don't skip out on coming to the east coast because the geography here is stunning But if you don't plan on visiting Taiwan anytime soon, and you do want to experience it Be sure to check out the two videos I have on Taiwan over on my travel channel Alex and I first go down the west coast and then back up the east coast and it's a lot of fun I hope you enjoyed learning all about Taiwan If you did, please like the video and subscribe to the channel if you want to watch more videos consider this one on Columbia's empty West Coast and Be sure to check out my adventures in Taiwan right here.
臺灣平地稀少，公路和鐵路必須穿越崎嶇的地形，大部分地區仍被茂密的植被或受保護的國家公園（如墾丁和太魯閣）所覆蓋。但是，雖然臺灣山地眾多，但西部地區由寬闊的平原和起伏的丘陵組成，為城市基礎設施提供了充足的空間，也許最重要的是為農業提供了充足的空間。例如，1999 年，臺灣開始修建第一條也是唯一一條高速鐵路線，將首都臺北與南部大城市連接起來、臺灣的高速鐵路時速可達 300 公里，但只能建在地勢較平坦的地區，是以臺灣幾乎所有的西海岸都與高速鐵路網相連、但臺灣並不完全是基礎設施的問題臺灣非常容易遭受自然災害，雖

斯坦福納米加工設備：幹蝕刻 - 等離子體基礎知識和工具類型（第 2 部分，共 4 部分） (Stanford Nanofabrication Facility: Dry Etching - Basics of Plasmas & Types of Tools (Part 2 of 4))

23:18

斯坦福納米加工設備：幹蝕刻 - 等離子體基礎知識和工具類型（第 2 部分，共 4 部分） (Stanford Nanofabrication Facility: Dry Etching - Basics of Plasmas & Types of Tools (Part 2 of 4))

And to maintain steady state balance in the plasma, we form a boundary layer that we're going to call the sheath or depletion region.
為了保持等離子體的穩態平衡，我們會形成一個邊界層，我們稱之為鞘或耗盡區。
So the ions come in isotropically into the boundary between the plasma and the sheath.
是以，離子會各向同性地進入等離子體和鞘之間的邊界。

20 項將改變世界的新興技術 (20 Emerging Technologies That Will Change The World)

48:48

20 項將改變世界的新興技術 (20 Emerging Technologies That Will Change The World)

Companies like Blue Origin have developed spacecraft capable of taking passengers just beyond the Kármán line, the boundary of space, about 62 miles above Earth's surface.
藍色起源等公司已經開發出能夠將乘客帶到距離地球表面約 62 英里的卡曼線（太空邊界）之外的太空梭。

化石狩獵正進入新的技術時代 (Fossil Hunting Is Entering a New Technological Age)

08:58

化石狩獵正進入新的技術時代 (Fossil Hunting Is Entering a New Technological Age)

The drones are able to capture high resolution X Y and see data by getting data on precise location and elevation, the team is able to accurately place fossils in relation to the Cretaceous Paleo Jean Boundary things.
無人機能夠拍攝到高分辨率的X Y和看數據，通過獲取精確的位置和高程數據，團隊能夠準確地將化石與白堊紀古生代讓界事物的關係。
K P G Boundary is a physical remnant from the asteroid impact that wiped out the dinosaurs.
K P G邊界是消滅恐龍的小行星撞擊的物理遺蹟。

十大最黑暗的兒童卡通片 (Top 10 Darkest Kids Cartoons)

14:43

十大最黑暗的兒童卡通片 (Top 10 Darkest Kids Cartoons)

It's no wonder the boundary pushing show eventually got a reboot that was firmly and exclusively for adults.
難怪這個突破界限的節目最終得到了重啟，而且是堅定不移地專門針對成年人。

當你是一個連續的一夫一妻制的人時，如何隨便地約會 (How to casually date when you’re a serial monogamist)

03:34

當你是一個連續的一夫一妻制的人時，如何隨便地約會 (How to casually date when you’re a serial monogamist)

I mean, if they ask, you tell them what if I don't want to see me after that respect, If they stated a boundary, then be fine with it.
我的意思是，如果他們問，你告訴他們，如果我不想看到我後，那尊重，如果他們說的邊界，那麼是好的。