interval/'ɪntəvəl $ -tər-/

n. a period of time between two events

n. [C] 间歇，间隔：After an interval of five years, the war broke out again. 间隔5年之后，战争又爆发了。

构词inter- + val （= wall墙）→“两堵墙间的空间”引申为“间隔”

音组-val/-vəl/

festival; interval; oval; survival