take someone/something in hand idiom mainly UK
（尤指为了改善状况或某人的行为）开始负责（某人）；开始处理（某事）
to start to be in charge of someone or something, especially in order to improve a situation or someone's behaviour
The matter was taken in hand by the director himself. 主管亲自处理此事。
That child needs taking in hand, if you ask me. 要我说的话，这孩子必须有人管着。