nuclear winter

1. N-UNCOUNT Nuclear winter refers to the possible effects on the environment of a war in which large numbers of nuclear weapons are used. It is thought that there would be very low temperatures and very little light during a nuclear winter. 核鼕天; 大量使用核武器的核戰爭對環境可能造成的影響。; 據稱在核鼕天中氣溫很低，且很少見光。[also 'a' N]