n.高射炮，对空炮火，（剧团、公司等的）宣传员，广告...

Once the cold water enters the flack, the vapor pressure falls quickly.一旦冷水进入长颈瓶, 水气压就迅速下降.A test device for flack flowing systems based on virtual instrument technology is developed.研制基于虚拟仪器技术的高炮随动系统性能检测装置....

flack的音标：flack的英式发音音标为：[flæk]flack的美式发音音标为：[flæk]...