Chemical warfare
01
化学战争, 化学武器
methods of warfare using chemical weapons
例子
Chemical warfare was widely used during World War I, causing massive casualties.
化学战在第一次世界大战期间被广泛使用，造成了大量伤亡。
Nations agreed to ban chemical warfare after its horrific effects were realized.
各国在认识到化学战争的可怕影响后同意禁止它。
