photographic negative

• 底片

photographic negative的用法和样例：

例句

1. I want 2 enlargements printed from this negative.
   我要用这张底片印两张放大照片。
2. "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
   "科幻小说不能简单地看成是供消遣的，而实际上它给读者展示更深刻的内容。"
3. One has to process a photographic film to print pictures from it.
   必须先处理照相底片才能冲印出相片。
4. The development of photographic films requires a dark-room.
   冲洗照相底片需要暗室。