on-again off-again

英

美

adj. 时有时无的；犹豫不决的；无结论的
[网络] 时断时续

She was moving across town to live with her on-again, off-again boyfriend.
她要搬到城市的另一头与她分分合合的男朋友同住。
As all of us hardcore Friends fans know, the main couple of the show that pulled at our heartstrings and demanded our attention with their on-again, off-again romance throughout the series was Ross and Rachel.
我们这帮铁杆粉丝都知道，整部剧里最主要的情侣就是罗斯和瑞秋这一对，他们之间的感情戏牵动着我们的心弦，让我们一直关注着他们之间的分分合合。
After much on-again, off-again angst, the couple capped off season 2 with a romantic engagement and are ready to walk down the aisle in season 3.
经过不断分分合合的焦灼，这对情侣在第二季剧终时浪漫订婚并准备在第三季走红毯。
An on-again off-again relationship may have entered a new cycle recently.
一段若隐若现（时有时无）的关系近来可能进入新的周期。
Plate tectonics, the geologic process responsible for creating the Earth's continents, mountain ranges, and ocean basins, may be an on-again, off-again affair.
板块构造运动，这个一直被认为是创造地球大陆，山脉和海洋盆地的地质过程，很可能是一种分分合合的特殊事件。