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or在词中一般念[ɔ:]，如lord[lɔ:d]；在词尾一般念[ə]，如如director[di'rektə]；特殊发音：door[dɔ:]，or[ɔ:]，for[fɔ:]等，但是特殊的很少，没有几个，单独记忆就可以。
or的例句
1、Everyone benefited from limiting their intake of tea to just three or four cups a day
每天只喝三四杯茶对身体有益。
2、The man was a fool, he thought, or at least incompetent
他想道，那人是个傻瓜，或者说，至少很无能。
3、She had to have the operation, or she would die.
她必须动手术，要不然就没命了。
4、He must have thought Jane was worth it or he wouldn't have wasted time on her, I suppose.
我想，他一定认为简值得他这么做，否则他不会在她身上浪费时间。
5、Chairman or no, if I want to stop the project, I can
不管我是不是主席，只要我想停止这个项目，我就能做到。