let sb. go whistle

例句：

1. 2.
   尤指
2. 3.
   尤指
3. 1. He whistled a tune to get the dog's attention.
   他吹口哨让狗注意。
4. 2. The old man whistled a tune as he walked along the street.
   老人边走边吹口哨。
5. 3. She whistled a warning note to signal that danger was approaching.
   她吹了一声哨来警告危险正在逼近。