Please notify us if the above is not correct.

如果上面所说的不正确，请通知我们。

《牛津词典》

If there is any change about the time of the meeting, please notify us in advance.

开会时间如有变，请提前告诉我们。

《新英汉大辞典》

Please notify us when you leave.

当你要离开时，请通知我们。

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