2 sentences

1. 这两趟班车的发车间隔是十五分钟。

   zhè liǎng tàng bān​chē de fā​chē jiàn​gé shì shí​wǔ fēn​zhōng.

   The departure interval for these two shuttle buses is fifteen minutes.

   Source: Dong Chinese Dictionary

2. 这排路灯的间隔非常均匀，看起来很整齐。

   zhè pái lù​dēng de jiàn​gé fēi​cháng jūn​yún, kàn qi​lai hěn zhěng​qí.

   The streetlights in this row are very evenly spaced and look quite orderly.

   Source: Dong Chinese Dictionary