on and off片語

斷斷續續地、時而、偶爾

It rained on and off for most of the afternoon.

整個下午斷斷續續地下著雨。

分分合合用於感情關係

They dated on and off for almost ten years.

他們交往了將近十年，分分合合。

時開時關、一開一關

The warning light kept flashing on and off.

警示燈不停地一亮一滅。

斷斷續續的、時有時無的

She has an on-and-off relationship with her ex.

她和前任的關係一直分分合合。