a period of unusually hot weather 酷热期;热浪 Extra ExamplesTopics Weatherc1A long summer heatwave had caused most of the crops to die. 一场漫长的夏季热浪导致大部分农作物死亡。 The demand for water rises sharply during a heatwave. 热浪来袭时,对水的需求急剧上升。 They said on the news the heatwave is going to continue for weeks. 新闻报道说热浪将持续数周。