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1·The little boy was a real handful. He was always up to mischief.

这个小男孩真是难管教。他总是在搞恶作剧。《柯林斯英汉双解大词典》

2·As they grew more mobile, we let them move freely around the house during the day, but when we were asleep we had to contain them in a large room, otherwise they'd get up to mischief.

随着它们越来越好动，白天我们让它们在家里自由活动，但当我们睡觉时，我们必须把它们关在一个大房间里，否则它们就会胡作非为。

3·The children are up to mischief.

小孩子们想胡闹。

4·Have you been up to mischief again?

你是不是又捣蛋了？

5·They look cute, but they are often up to mischief.

他们看起来很聪明，但是他们经常恶作剧。

6·Making trouble: the little tyke is featured getting up to mischief around the family home - including shoving cookies into a VCR.

制造麻烦：照片中的小主角在家里干了各种坏事——包括将饼干塞进了影碟播放机。

7·Because he also served as Roundup's part-time deputy sheriff he eyed businesses along the main street to see they were locked up tight and that side streets were vacant of anyone up to mischief.

由于他是郎达普的兼职副警长，他要检查主街道上的商户，看看他们的门有没有锁好，还要确保小街道上没有人捣乱。

8·It's very quiet upstairs; they must be up to some mischief !

楼上很安静。他们一定在搞什么恶作剧。《牛津词典》

9·Who put the child up to this piece of mischief?

谁唆使这个小孩做出这种恶作剧？

10·We'll never know what mischief they were up to.

咱们怎能知道他们捣的什么鬼呀！