Photographic paper is highly sensitive to light.

感光纸（相纸）对光十分敏感。

A postcard design is first burned into photographic paper, then it is transferred onto cards.

一张明信片的设计是首先被烧成相纸，然后被转移到卡片上。

They shine light through the negative onto another piece of photographic paper, to make the exposure reaction happen again.

他们透过负片把光照到另一张像纸上，使得曝光反应再次进行。