Typically, it's silver halide crystals floating around in gelatin, which solidifies on the film.

有代表性地是悬浮状中的卤化，其最终固卷上。

But the basic idea is that they react with the remaining silver halide crystals to create an image you can see.

但基本路都是与残留的卤化反应，生成可见的图案。

If more photons hit a silver halide crystal, more reactions with the developer can happen, and that spot on the film strip becomes darker.

更多光子撞击卤化，会引发更多显影剂反应，并且卷上的该点也会变得更暗。

Silver halides are just some atoms of silver bound to atoms of any element known as a halogen, which includes things like bromine, chlorine, and iodine.

卤化由原子与卤素原子组成，卤素原子包括像溴、氯、碘等元素。