n. the sound made by something moving rapidly or by steam coming out of a small aperture
n. the act of signalling (e.g., summoning) by whistling or blowing a whistle
n. a small wind instrument that produces a whistling sound by blowing into it
n. acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound
n. 口哨, 汽笛, 啸啸声, 口哨声
vi. 吹口哨, 鸣汽笛, 发嘘嘘声
vt. 用口哨或吹哨传意, 用口哨演奏
1. She can whistle a beautiful tune.
她能吹出优美的旋律。
2. The coach blew his whistle to start the game.
教练吹响哨子开始比赛。
3. I heard someone whistle while walking in the park.
我在公园里散步时听到有人吹口哨。