常见例句用作名词 (n.)Bombs and poison gas would rain down on undefended cities.炸弹毒气弹纷纷投向那些没有防御的城市。The police used poisonous gas to force the robbers out of the house.警方施放了毒气弹，把劫匪逼出了屋子。 返回 gas-shell