Know one's business
精通自己一行
🧩 词语组成解析
know
[no]
v. 知道;了解;认识;确信;
n. 知情;
a. 人们的；自己的
business
[ˈbɪznɪs]
n. 商业，交易;生意;事务，业务;职业，行业;
🗣️ 情景例句
If the mood takes me, I'll head down the beach for an evening stroll.
如果心情不好，傍晚我会到海边散步。
Silverwind took a firm grasp of his axe.
银风紧握住斧柄。
I'm sorry, but we have a problem here.
对不起，我们有困难。