老师警告孩子们：我不在的时候别淘气。

The teacher warned the kids: Don't try any monkey business when I'm away.

youdao

是他的错：比利和波比是两兄弟，两人经常打架。上个星期六，他们的妈妈对他们说：“我现在要做午饭了。”去，到花园去玩吧，别淘气。

Billy and Bobby were brothers, and they often had fights with each other. Last Saturday their mother said to them, "I'm going to cook our lunch now. Go out and play in the garden - and be good."

youdao

你这个淘气鬼，别拉猫的尾巴了。

You naughty boy, stop pulling the cat's tail.

youdao