If something is photosensitive, light does something to it. A film, a sensor, or a special paper may change colour or make an electric current when light hits it — that is how older cameras “caught” a picture, and how some detectors work. Chemists also make materials photosensitive on purpose.

If something is photosensitive如果某樣東西是photosensitive的，light does something to it光就會對它產生作用。A film, a sensor, or a special paper像底片、感應器，或特殊的紙，when light hits it當光照到它的時候 may change colour or make an electric current可能會變色或產生電流——that is how older cameras "caught" a picture這就是舊式相機「捕捉」畫面的方式，and how some detectors work也是有些偵測器運作的方式。Chemists also make materials photosensitive on purpose化學家也會刻意把材料做成photosensitive。

Though actually, doctors use the word for people too: some medicines make your skin photosensitive, so the sun burns you more easily, and a few people have photosensitive epilepsy, where flashing lights can bring on a seizure.

Though actually不過事實上，doctors use the word for people too醫生也會拿這個字講人：some medicines make your skin photosensitive有些藥會讓你的皮膚變得photosensitive，so the sun burns you more easily讓你更容易被曬傷，and a few people have photosensitive epilepsy也有少數人有photosensitive epilepsy光敏性癲癇，where flashing lights can bring on a seizure閃爍的燈光可能引發癲癇發作。

In everyday talk you can just say “sensitive to light”; photosensitive sounds more like a lab, a factory, or a clinic.

In everyday talk在日常對話裡，you can just say "sensitive to light"你可以直接說sensitive to light對光敏感；photosensitive sounds more like a lab, a factory, or a clinic photosensitive聽起來比較像實驗室、工廠，或診所裡會用的字。