We could only get a good look at the structure of the gears after gamma-rays were used to see inside, very similar to the way X-rays are used to see your bones.
我们只有在用伽玛射线观察内部之后才能很好地了解齿轮的结构，这和用X 射线看你的骨头非常相似。
You still use your muscles, but only for the relatively undemanding task of keeping your bones stacked vertically on one another.
你还是要利用肌肉，但是只是相对轻松地辅助骨骼一个一个垂直相叠加。
Strike a happy medium in your weight control; it's unhealthy to be only skin and bones.
控制体重要采用中庸之道；骨瘦如柴是不健康的。
When you are a baby you have 300 bones in your body. But when you grow up, your body only has 206.
我们出生时有300块骨头，但是当我们长大了之后，却只有206块了。
When you are a baby you have 300 bones in your body. But when you grow up, your body only has 206.
我们出生时有300块骨头，但是当我们长大了之后，却只有206块了。
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