or

Is it Tuesday or Wednesday today?

今天是星期二还是星期三？

You can pay now or when you come back to pick up the paint.

你可以现在付款，也可以等你回来取油漆时再付。

Are you listening to me or not?

你有没有在听我说话？

The patent was granted in (either) 1962 or 1963 – I can't quite remember which.

该专利是在1962年或1963年授予的——我记不清是哪一年了。

It doesn't matter whether you win or lose – it's taking part that's 输赢没有关系——重在参与。

There were ten or twelve (= approximately that number of) people in the room.

房间里有10个或12个人。

He was just kidding – or was he (= but it is possible that he was not)?

他只是在开玩笑——或许他不是？

The child never smiles or laughs.

这孩子从不微笑，也不大笑。

You should eat more, or you'll make yourself ill.

你应该多吃点，否则你会生病的。

Rosalind, or Roz to her friends, took the initiative.

罗莎琳德，她的朋友们叫她罗兹，首先采取了行动。

Things have been going very well recently. Or they were, until two days ago.

近来事情进展得一直都很顺利。或者说，直到两天以前还一直很顺利。