1N-COUNT 弹壳;弹药筒 A cartridge is a metal or cardboard tube containing a bullet and an explosive substance. Cartridges are used in guns. 弹壳;弹药筒
2N-COUNT (机器、设备等可更换使用的)盒,筒 A cartridge is part of a machine or device that can be easily removed and replaced when it is worn out or empty. (机器、设备等可更换使用的)盒,筒
Change the filter cartridge as often as instructed by the manufacturer.