柯林斯词典mustard gas 1. N-UNCOUNT Mustard gas is a gas which burns the skin and was used in war as a weapon. 芥子气; 战争中曾用作武器、可灼烧皮肤的气体 返回 mustard gas剑桥词典a very poisonous gas , used as a weapon , that burns the skin , damages organs inside the body , and can kill 芥子气（一种毒性很强的气体，用作化学武器，可灼伤皮肤及内脏并致人死亡） 返回 mustard gas