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
Bottle the sound.
将声音装起来呀。
To run after the gentleman
追求绅士
but they seldom realize that they have brought this on themselves.
殊不知这是他们自找的。