pipe down
安静下来；吹哨停工
同义词
反义词
参考例子
1.On seeing the teacher coming, the students in the classroom piped down.
一看到老师走来，教室里的学生就静下来了。
2.Will you children pipe down and go to sleep?
孩子们，可不可以静一静，睡觉去?
3.Mike put his pipe down, crossed his hands behind his neck, and turned his face towards the window.
麦克放下烟斗，双手交叉着放在脖子后面，转过头去看窗子。
英文解释
v.
1.become quiet or quieter
网络释义
pipe down
安静些; 安静下来; 停止; 肃静;
down pipe
头批; 雨水管; 落水管”; 水落管;
vertical down pipe
直立式落水管; 竖立式落水管;
storm down pipe
暴雨水落管;
wash-down pipe
冲洗管;