talk the talk
US /tɔk ðə tɔk/
UK /tɔk ðə tɔk/

1.
夸夸其谈, 说得头头是道
to speak confidently and convincingly about something, often without necessarily following through with actions
:
•
He can really talk the talk about leadership, but his team never seems to get anything done.
他确实能夸夸其谈领导力,但他的团队似乎从未完成任何事情。
•
It's easy to talk the talk, but can you actually deliver on your promises?
说起来容易,但你真的能兑现你的承诺吗?