间隔 (jiàn gé): Interval (Verb, Noun) — Meaning & Stroke Order

There must be an interval of at least half an hour between the two meetings to prepare materials.

How often do you usually call your parents who live far away?

There is a small gap between these two buildings where we can plant some flowers and plants.

The books on the shelf are arranged neatly, but there is a small space left between every two books.