wind machine
noun/ˈwɪnd məʃiːn/
/ˈwɪnd məʃiːn/
- a machine used in the theatre or in films that blows air to give the effect of wind
（剧院或电影用的）造风机，风力效果机 - a machine used in orchestras to produce the sound of wind
（管弦乐队的）风声器，风鸣器