WHISTLE——含义、同义词和翻译| 柯林斯英语词典资源 A whistle is a small metal tube which you blow in order to produce a loud sound and attract someone's attention When you whistle, you make sounds by forcing your breath out between your lips or teeth
Whistle - Wikipedia Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ Whistles have been around since early humans first carved out a gourd or branch and found they could make sound with it