at irregular intervals

In their experiments, the researchers used sequences of sounds in which a different tone was heard at irregular intervals in between a series of identical ones.

At irregular intervals, the voice also tells you not to worry and warns that more flashes are coming soon.

At the Hammer, Moshayedi experimented with group exhibitions installed in open-plan galleries, sometimes including performance art scheduled to happen at irregular intervals alongside traditional paintings, sculptures, photographs and video projections.

Pictures hang at different heights and at irregular intervals.

In the first days of Russia’s invasion, the Ukrainian government turned to foreign help that came at irregular intervals.