talk the talk

　　说得头头是道，流利地谈论某事

　　释义：

　　to talk or act in a confident way so that you seem to be very good at what you do 流利(或令人信服)地谈论某事

　　类似，walk the walk 表示“说做就做，付诸行动”

　　例句：

　　She's only been a lawyer for three years, but she sure can talk the talk.

　　A team that talks the talk but cannot walk the walk.