当你跟某人道再见时，你可以说：Byebye（再见）或者 Goodbye（再见）。

When you say goodbye to someone, you can say Byebye （Byebye） or Goodbye.

youdao

道再见的非正式用法是See you later(再见)。尤其在你希望很快再见到某人时使用这种用法。

An informal way of saying goodbye, especially if you expect to see the person again quite soon, you can say: see you later.

youdao

再见的不再见的都笑着说再见。

Goodbye is not goodbye all laugh and say goodbye.

youdao

Well, this is a problem that we have solved and will solve in the weeks to come. See you Monday.

嗯，这是我们解决了的一个问题,并且将在接下来几周来解决这个问题，下周一再见。

哈佛公开课 - 计算机科学课程节选

So I'll--I won't be here Monday but my T.A.'s will handle the exam So, I will see you on Wednesday

我周一就不来了,助教会帮我负责考试,那么,周三再见

耶鲁公开课 - 金融市场课程节选

So people are becoming more and more aware We gonna talk about this and other issues in the class I am looking forward to having conversation with you See you then.

我们能由此看出，人们变得越来越明智了,我们将在课堂上讨论这个以及其他的话题,我很期待与你们的交流,再见。

麻省理工公开课 - 媒体、教育、市场课程节选