(1)弹药(武器)库(室)(store for arms，explosives，etc)[C]：in the ship's～在船上的弹药仓里;The～exploded.弹药库发生爆炸。

(2)弹仓(夹)(supply chamber as in a rifle)[C]：ammunition～s in the guns枪上的子弹盒;

(3)胶卷(底片)盒(place that holds the roll of film in a camera)[C]：a～film一盒软片;a～camera自动卷片照相机