芥子气

例句：

1. 1. The soldierwas exposed to a lethal dose ofmustard gas during the battle.
   士兵在战斗中暴露于致命剂量的芥子气。
2. 2. The chemical warfare agent is knownas mustard gas.
   这种化学战剂被称为芥子气。
3. 3. The soldiers were instructedto wear protective gear when handling mustardgas.
   士兵们被指示在处理芥子气时穿戴防护装备。