底片的用法和樣例：
例句
-
＂用那張底片，你要我們印幾張像片？＂
How many copies do you ask us to print off from the negative? -
如果你照完一張相片后不往前進一張，底片就是會曝光。
If you don't wind on after taking a picture, your negative will be double-exposed. -
一次成像相機的問題在於沒有底片，而其相片在數年內就會明顯褪色。
The problem about the instant camera is the lack of negative, and their print can fade considerably within a few years. -
把門關上，不然亮光能使底片發灰。
Shut the door or the light will fog the film.
