After landing the biggest client, Tom walked into the meeting with a smug grin.

拿下最大的客戶後，湯姆帶著得意洋洋的笑容走進會議室。

Customers dislike service agents who sound smug when explaining a refund policy.

客戶不喜歡客服人員在說明退款政策時語氣自鳴得意。

The candidate seemed a little smug, so the hiring panel chose someone else.

那位應徵者顯得有點自以為是，所以面試小組選了別人。