turn/set/put one's hand to
从事
A:Is Jack still staying idle everyday?
A:杰克现在还是整天无所事事吗？
B:No, he has mended his way. After his father died, he set his hand to the job of putting his business affairs in order.
B：不，他已经改过自新了。自从他的父亲死后，他着手整顿他的生意，使之走上了正轨。
A:Really? He's so competent now!
A：真的吗？他现在这么能干了！
B:You can't imagine what he is like now.
B：你无法想象他现在的样子。