如果一个人摔倒时伸开双手，也就是说用手撑地，那他很可能就会摔断桡骨——支撑前臂的最主要的两块骨头之一。
If a person falls on their outstretched hand, they are most likely to break the radius, one of the two main bones supporting the forearm.
只有在茧中奋力地撑出了小洞，一只蝴蝶才能拥有足够强劲的翅膀用以飞翔。
Only in struggling to emerge from a small hole in the cocoon does a butterfly form wings strong enough to fly.
更容易被忽略的是手部另一块骨骼舟状骨处的断裂，这也是手撑地摔倒时很容易受伤的部分。
What is much easier to miss, is a break in the scaphoid – one of the bones within the hand – which is also vulnerable to damage from a fall on to the palm.
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