该方法用到一片铜片，上面用光敏感的沥青覆盖。
The method involves a piece of copper covered with light sensitive bitumen.
要特别注意热不稳定和光敏感的产品的储存。
Special attention should be paid to the storage of heat labile or photosensitive products.
眼睛的后部覆盖着对光敏感的细胞，它们负责将你所看见的传递给大脑。
The back of your eye is covered with light sensitive cells which send messages about what you see to your brain.
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