cartridge

1. N-COUNT A cartridge is a metal or cardboard tube containing a bullet and an explosive substance. Cartridges are used in guns. 彈葯筒

Only four of the five spent cartridges were recovered by police. 5個子彈殼中衹有4個被警方收廻。

2. N-COUNT A cartridge is part of a machine or device that can be easily removed and replaced when it is worn out or empty. (機器或裝置中可替換的部分) 套筒

Change the filter cartridge as often as instructed by the manufacturer. 要按制造商要求的頻率更換過濾套筒。