microcartridge

例句：

1. 1.The microcartridge is small enough to fit in a pocket.
   这个微型弹匣足够小，可以放进口袋。
2. 2. He carried a microcartridge in his pocket.
   他口袋里带着一个微型弹匣。
3. 3. The microcartridge was used as a backup weapon in the battle.
   在战斗中，微型弹匣被用作备用武器。