Definition
- C1
To have practical knowledge or a clear understanding of a subject due to experience.
內行
As a seasoned chef, he certainly knows what he's talking about.
作為一名經驗豐富的廚師，他當然知道自己在說什麼。
I don't think she really understands the situation with that company; she doesn't know what she's talking about.
我不認為她真的了解那家公司的情況；她不知道自己在說什麼。
When you talk about marketing strategies for this industry, it's clear that you know what you are talking about.
當你談論這個行業的營銷策略時，很明顯你知道自己在說什麼。