Definitions

[1] n. 未知数

[2] [计] 交换, 变址, 索引, 传输

1. The doctor used X-rays to examine my stomach.
   醫生用X光檢查我的胃。
2. Do I need X-rays?
   我需要照X光片吗？
3. The x-ray showed two broken fingers.
   X光片显示两根手指断了。
4. Dentists take x-rays to examine your teeth.
   牙医用X光检查你的牙齿。
5. The doctors are looking at an x-ray.
   医生在观察X光片。
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