There comes a point where you give up.

　　現在你該放棄了。

　　I give up ─ tell me the answer.

　　我放棄了，把答案告訴我吧。

　　She knew from past experience that Ann would not give up easily.

　　她憑以往的.經驗知道安是不會輕易放棄的。

　　He suffered a serious injury that obliged him to give up work.

　　他受傷嚴重，不得已只好放棄工作。

　　He's trying to give up smoking.

　　他正設法戒煙。