1. | 枪弹;子弹a tube or case containing explosive and a bullet or shot , for shooting from a gun |
2. | 胶片盒;暗盒;墨盒a case containing sth that is used in a machine, for example film for a camera, ink for a printer, etc. Cartridges are put into the machine and can be removed and replaced when they are finished or empty. |
3. | (钢笔的)笔芯,墨水囊a thin tube containing ink which you put inside a pen |