| 释义 |
be up to
释义
做某事或参与某事（通常是一些恶作剧或不恰当的事情）：取决于，是选择的。
例句
1·I'll be up to see you tomorrow.
我明天上来看你。
《柯林斯英汉双解大词典》
2·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》
3·"Strange," I thought."They must be up to something!"
“奇怪，”我想。“他们一定在搞什么鬼！”
同义词
胜任；该由…负责；轮到…；从事，忙于
undertakeaddresspursuehavewage
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