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- 额外物超出平常的或必要的东西
Something more than is usual or necessary.
- 反常的，异常的非一般的、不平常的或非惯例的；不正常的；反常的
Not typical, usual, or regular; not normal; deviant.
- 不要待在这儿超过平常的时刻。
Don't stay here beyond the usual hour.
- 平常的地下火车接近车站时，发出的声音可能是最大声的喷射机的两倍。
An ordinary subway train, approaching the station, can be twice as loud as the loudest jet.
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