单词 moist air 例句 DEFINITIVE EXAMPLES 权威例句〔DIRECTION〕Tornadoes usually form when rising warm, moist air rotates, as winds from opposite directions collide. 两股相对的气流相撞,上升的暖湿气流发生旋转,通常就会形成龙卷风。朗文写作活用〔blow〕To spo...