Translation of "Gap" in Chinese

The gap between them has narrowed.

两人之间的距离已拉近。

Please mind the gap between the train and the platform.

請小心月台與車廂之間的空隙。

In the London underground there is a warning to "mind the gap" when boarding the train.

在倫敦地鐵，上車時會有「注意間隙」提醒。