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

1.
誇誇其談, 說得頭頭是道
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.
他確實能誇誇其談領導力,但他的團隊似乎從未完成任何事情。
•
It's easy to talk the talk, but can you actually deliver on your promises?
說起來容易,但你真的能兌現你的承諾嗎?