/fju: ||; fju/exclamation a sound which you make to show that you are hot, tired or happy that sth bad did not happen or has finished （用于表示炎热、疲倦、为某不好的事未发生或终于结束而松一口气的声音）: Phew, it's hot! （发出口哨声）真热！Phew, I'm glad that interview's over! （发出口哨声）面试结束了，真高兴！