sediment
US /ˈsɛdəmənt/
・UK /ˈsedɪmənt/
B2 中高級
n. (u.)不可數名詞沉澱
The sediment in the bottom of that glass tastes bitter
影片字幕
永凍土融化會怎樣？ | BBC Ideas (What happens when the permafrost thaws? | BBC Ideas)
- Permafrost is rock, sediment or ice that remains at or below zero degrees Celsius for two or more consecutive years.
永久凍土是指連續兩年或兩年以上保持在零攝氏度或零攝氏度以下的岩石、沉積物或冰。
- Permafrost is rock, sediment, or ice that remains at or below 0°C for two or more consecutive years.
北極的永久凍土往往有幾千年的歷史，而在南極地區，我們發現的永久凍土有幾百萬年的歷史。
人類世的爭議，一次搞懂！ (The debate over the Anthropocene, explained)
- That means the sides slope dramatically downwards, and the water at the bottom doesn't mix with the water at the top, making the sediment underneath extraordinarily well-preserved.
這意味著兩側的坡度極大地向下傾斜，底部的水不會與頂部的水混合，是以底部的沉積物保存得特別完好。
- and the water at the bottom doesn't mix with the water at the top, making the sediment underneath extraordinarily well-preserved.
正是這種獨特的品質吸引了科學家於 2023 年從湖中挖掘出沉積物樣本。
7件事我們對海洋一無所知！ (7 Things We Don't Know About the Ocean)
- They were only about 10 to 10,000 microorganisms in a cubic centimeter of sediment that they studied, compared to, like, billions that you'd find in the same amount of dirt from your garden.
這個地圖描繪了整個海床，非常棒，我們也很開心有這個地圖
- and they seem to have formed when layers of salt from evaporated oceans millions of years ago got buried under layers of sediment.
海床下方約深2.5公里處發現了活的微生物。
人類史上最大的謎團終於解開了！ (The Biggest Mystery In Human History Was Just Solved)
- It happened during an abrupt warming event that lowered lake levels at the time in a way that when humans walked over the wet and dry ground, they left footprints that became preserved in multiple sediment layers that were dug up by scientists in the last few years.
結果發現，人類在大約 22,000 年前也在這裡留下了獨特的腳印。
- It happened during an abrupt warming event that lowered lake levels at the time in a way that when humans walked over the wet and dry ground, they left footprints that became preserved in multiple sediment layers that were dug up by scientists in the last few years.
這發生在一次突然的暖化事件中，當時湖泊水位下降，人類走過潮濕和乾燥的地面時，留下了足跡，這些足跡被保存在科學家們在過去幾年挖掘出來的多層沉積物中。