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。
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There are lots of good sentence structure and words to learn to boost your gamma and vocabulary.