at intervals

Flaming torches were positioned at intervals along the terrace.

沿台阶每隔段距离布置有燃烧着的。

These cars are put at intervals of three meters.

些车每隔三米放辆。

The UIE hold a large scale international academical congress at intervals of four years.

摘要国际电热协会(UIE)每隔4年举行次大规模国际性的电热学术会议。

It snowed at intervals this week.

星期不时下雪。