a colorless poisonous gas that smells like new-mown hay; used in chemical warfare
phosgene详细解释
phos.gene n.(名词)A colorless volatile liquid or gas, COCl2, used as a poison gas and in making glass, dyes, resins, and plastics. 光气,碳酰氯:一种无色的挥发性液体或气体,COCL2,用作毒气和用于制造玻璃、染料、树脂和塑料