常見例句The first reported event of this kind in the United States happened in Donora, a factory town in a valley near Pittsburgh. 據(jù)報(bào)導(dǎo),在美國的第一起這類事件發(fā)生在靠近匹茲堡的多諾拉。多諾拉是一個城鎮(zhèn),那里全是工廠。Donora crisis 美國多諾拉事件 返回 Donora