評論
打印
A tornado rips across the Missouri Plains. Winds over 150 miles per hour shred everything in the twister's path.
龍卷風在密蘇里平原肆虐橫行。風速高達每小時150英里，撕碎了前進路上的一切障礙。
When it smashes a trailer home, one man is sucked into the heart of the storm, spun and shaken horrifically.
當它打道回府的時候，一名男子被吸進風眼，恐怖地旋轉搖擺。
His limp body drops out of the sky a quarter of a mile away.
他軟弱的身體最終從1.25英里的高空落下。
"It was crazy. I knew that I wasn't where I supposed to be, and it took me a minute to realize, you know, what was happening."
“簡直太瘋狂了。我知道我應該在哪里。你知道，我用了一分鐘的時間才明白發生了什么事?！?/div>
Matt hasn't broken a single bone. How could that be? Scientists estimate Matt hit the ground traveling at least 30 miles an hour.
Matt毫發未損。為什么會這樣呢？科學家估計Matt落到地面時的速度至少每小時30英里。
Yet his bones protected his internal organs from being smashed.
但是他的骨頭保護他的內臟器官免收損害。
"Lock the door." "Got it."
“鎖門。” “收到?！?/p>
Our skeleton is made up of 206 bones, from the largest in our legs and arms to the tiny bones in our toes and fingers.
我們的骨架由206塊骨骼組成，從四肢的最大的骨骼到手指腳趾的細小的骨頭，
They give us the tough flexible frame that lets us push and pull on our will.
組成了我們堅硬有彈性的框架，使我們可以伸縮自如。
Bone is incredibly strong.
骨骼堅硬的不可思議。
Pound for pound, bone is stronger than concrete. It has a strength-to-weight ratio found in no other natural material on earth.
均等重量下，骨頭比水泥還堅硬。它有這很高的力量重量比率，地球上的其他物質都沒有發現。
The secret of bone's strength and lightness lies inside. It is a matrix of hollow cells; its walls are as thin as paper.
骨頭的力量大，重量卻很輕，秘密在于骨頭里面。它是由一系列空細胞組成的，細胞壁像紙一樣薄。
Bone gets its rigidity from calcium and phosphorus, materials found in seashells and teeth.
骨骼堅硬是由于鈣和磷，這些物質同樣存在于貝殼和牙齒中。
But astonishingly, almost half of our bone mass is soft and alive, allowing our bones to bend.
但是令人驚訝的是，我們骨骼中幾乎一半的物質是柔軟的，活動，可以使我們的骨骼彎曲。
Every seven years, a healthy human body completely replaces every single bone cell.
每七年，健康的人體的骨骼細胞會更新一遍。
This renewal keeps our bones incredibly strong and uniquely adaptable.
這種更新使我們的骨骼異常堅硬，適應性奇強。
