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。
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