negative film

例句：

1. 1. The negative film was developed in the darkroom.
   负片在暗室中显影。
2. 2.The photographer used a negative film to capture the scene.
   摄影师使用负片捕捉了这一场景。
3. 3.The negative film is fragile and needs to be handled carefully.
   负片很脆弱，需要小心处理。