Number 1: the loop on the back of your shirt.

第一：襯衫後面的小圓環。

Most people look at the loop on the back of their shirt and wonder what it's for.

很多人看到他們襯衫後面的小圓環，就會很好奇它的功用是什麼？

There is a purpose for it on the back of your shirt; there are actually three documented reasons and it's unknown which is correct.

這個襯衫後面的小圓環的存在是有目的的。有三個紀錄的說法，但沒有人知道哪一個才是正確的。

The first is the most obvious: It's a way to hang your shirt on a hook.

第一個最明顯的原因：把襯衫掛在鉤子上。

This doesn't make sense, however, because if you hang your shirt on a hook by that loop, it will become wrinkled quickly.

這一點道理都沒有，因為如果你把用小圓環把襯衫掛起來，襯衫一下就變皺了。

The second could be a way to help you fasten your tie easier.

第二個原因是為了讓你更容易繫好領帶。

The last purpose is more romantic.

最後一個原因比較浪漫。

Years ago, American university students were said to have removed the loop from the shirt when they started dating a girl exclusively.

很久以前，據說美國大學生交了女友之後會把這個小圓環移除。

To show she was taken, the girl would wear a scarf with the university's emblem.

女生為了表現自己也有對象，她們會穿戴有大學徽章的圍巾。

Number 2: the cylinder on your laptop's power cable.

第二：筆電充電線上的小圓筒。

Most people see the cylinder on their laptop's power cable every day and have no idea what it's for; some believe that it's for decoration.

大多數的人每天都會看到筆電充電線上的小圓筒，但還是不知道它的功用是什麼，有些人認為那只是裝飾。

It's called a ferrite bead, and it suppresses high frequency noise in the electrical circuits.

這叫磁珠，可以用來抑制電路中的高頻雜訊。

The design is quite simple; it's made from ferrite, and it's wrapped to protect it.

設計很簡單。它由鐵氧體製成，包裹著電線來保護它。

Number 3: the tiny hole in the window of a plane.

第三：飛機窗戶上的小洞。

Airplane windows are made up of two pieces of perspex, which is plastic glass.

飛機窗戶由兩片壓克力組成，也就是塑膠玻璃。

Without the tiny hole in the window, the inner piece of glass would shatter due to the difference in pressure between the plane's cabin and the outside.

若窗戶沒有那個小洞，內側的那片玻璃會因為飛機內外的壓力差而碎裂。

The tiny hole lets air move from the cabin into the other pane of glass; the tiny hole equalizes the pressure between the two panes.

這小洞使空氣從飛機內移動至另一片玻璃，平衡兩片玻璃之間的壓力。

It's what keeps the cabin of the plane safe.

這能確保飛機艙裡的安全。

For such a tiny little detail, it has a huge lifesaving purpose.

它雖然是一個小細節，但卻有偉大的救人使命。

Number 4: the blue part of the eraser.

第四：橡皮擦上藍色的部分。

Most people think that the pink part of the eraser is for pencil marks, and the blue part is for pen marks.

多數人認為粉紅色部分是為了擦掉鉛筆字跡，藍色部分為了擦掉原子筆字跡。

This is not true.

這是不對的。

When you erase your pencil marks with the pink part, it's not uncommon for some pencil smudge to be left behind.

當你用粉紅色部分擦掉鉛筆字跡時，通常還會有筆跡沒擦乾淨的地方。

The blue part is designed to remove any of the pencil smudges.

藍色部分是設計來擦掉任何筆跡的。

When the eraser producers realized that people didn't understand the true reason for the blue part of the eraser, they started marketing it to remove pen marks.

當橡皮擦製造業商發現人們不懂藍色部分的實際用處時，他們開始推銷說這部分可以擦掉原子筆字跡。

Many erasers even have a picture of a pen printed on the blue part of the eraser, even though that was not its original purpose.

許多橡皮擦的藍色部份甚至印有原子筆的圖案，就算這不是它最初的用途。

Number 5: the extra eyelets on your sneakers.

第五：運動鞋上多餘的鞋帶孔。

Most people believe that the extra eyelets on their sneakers are just there for decoration. This is false.

多數人認為運動鞋上多餘的鞋帶孔只是裝飾，但這是錯的。

The extra eyelets are designed to fix the shoes in place so that they don't rub against your ankles when you are running or playing sports.

多餘的鞋帶孔是設計來固定好鞋子，讓鞋子不會在你跑步或運動時摩擦你的腳踝。

If you start using them, you might notice a big difference, especially if you're wearing ankle socks.

若你開始使用這些小孔，你可能會發現有很大的差別，尤其是在穿踝襪的時候。

The extra eyelets also give you more stability in your ankles.

多出來的鞋帶孔也能讓你的腳踝更加穩固。

Number 6: the hole in a spaghetti spoon.

第六：義大利麵湯匙裡的孔。

All spaghetti spoons have a hole in the bottom; some people believe it is so the water drains when you are stirring the spaghetti.

所有的義大利麵湯匙的底部都有一個小孔。有些人認爲這樣在攪拌義大利麵時才能排出水分。

The actual purpose is to measure out an accurate amount of spaghetti for one serving.

實際的用途是用來準確地測量一人份量的義大利麵。

While people often eat different amounts of spaghetti, the amount that fits in the hole is considered one serving.

雖然吃多少義大利麵因人而異，但塞得進那小孔的義大利麵被認為是剛好一份的量。

Number 7: the little pocket within the big pocket on your jeans.

第七：牛仔褲口袋裡的小口袋。

This is one of the most common things that you probably don't know what it is.

這是最常見，但你可能不太知道用途的東西。

Most people think that the small pocket of the jeans is just for decoration.

多數人認為這牛仔褲的小口袋只是裝飾。

The little pocket actually served a purpose a few years ago.

事實上，小口袋在過去幾年前其實是有功用的。

The first time the little pocket was seen was on Levi's jeans back in 1873.

在 1873 年，小口袋首次出現在 Levi's 牛仔褲上。

Back then, pocket watches were very popular, and the small pocket was designed to hold the watch.

當時很流行懷錶，這小口袋就是用來裝懷錶的。

Today, since people don't really carry pocket watches anymore, the little pockets really don't have much of a purpose.

如今，因為人們不太攜帶懷錶，小口袋就沒什麼功用了。

Number 8: the extra scrap of material that comes with new clothes.

第八：附在新衣服上的額外布料。

Many people believe that the extra scrap material is to patch the article of clothing if it rips or to replace a button. This is not true.

許多人認為這多出來的布料是當衣服破掉或要換鈕扣時，能用來修補衣服的。這是不對的。

The actual reason that clothing manufacturers add the scraps of material is so that you could wash it first.

衣服製造商之所以會附上這些材料的實際原因，是為了讓你在洗衣服前用材料先洗一次。

This will let you see how the laundry detergent and the washing cycle will affect the clothing.

讓你知道洗衣精以及洗衣行程會如何影響衣服。

This will save you from ever fading or shrinking an outfit the first time you wash it.

這能避免你在衣服在第一次下水前，變得褪色或縮水。

Number 9: the hole in the top of a pen cap.

第九：原子筆蓋上的小洞。

People believe that the hole at the top of the pen cap will allow air to get into their lungs if they accidentally swallowed the cap.

人們認為若誤吞食筆蓋，筆蓋上的小洞能讓空氣流進肺裡。

If you were to swallow anything, and it gets stuck in your trachea, the mucous membranes will start to swell.

但若你吞食任何卡在你食道的東西，黏膜就會開始腫脹。

The hole in the cap will keep it from becoming absorbed in the membrane.

筆蓋上的小洞會防止筆蓋被黏膜吸收。

Number 10: the snap on your pockets of your jeans.

第十：牛仔褲口袋上的壓釦。

The snaps on the pockets are not called snaps; they're called rivets.

口袋上的壓釦並不是叫壓釦，而是鉚釘。

A great deal of fabric is gathered and stitched at the pockets.

大量的布料被集中在口袋並且縫起來。

This area needs more strength due to the extra stitching, and the rivets will give the pocket more strength, preventing it from tearing.

這個地方因為縫了很多針，需要更大的力量支撐它，鉚釘則能給口袋更多支撐，防止它破掉。

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