... do one's stuff显身手 kid stuff 孩子的把戏;小菜一碟 get a grip on yourself 控制自己 ...
权威例句
1.
"Bankruptcy is one of the most powerful courts in the U.S. because you can dostuff that you normally can't do, like kill contracts, " says David Lerner, a bankruptcy attorney in Bloomfield Hills, Mich.