Frequency

She studies day and night to prepare for her exams.

She works all hours to meet the demands of her high-pressure job.

She adapts her plans from day to day based on the changing circumstances.

Nine times out of ten, she prefers tea over coffee in the morning.

断断续续地, 不规则地

The internet connection at my house works off and on, causing occasional disruptions.

我家的互联网连接断断续续，偶尔会造成中断。

Once in a blue moon, she treats herself to a spa day for some much-needed relaxation.

They experience moments that happen only once in a lifetime.

The company's restructuring plan aims to cut costs and streamline operations at one fell swoop.

The convenience store is open twenty-four seven, allowing customers to shop at any time.

Time after time, he promises to change, but he never does.

Every evening at 8 PM, as regular as clockwork, my dad sits in his armchair and reads the newspaper for exactly 45 minutes.