Watch these thoughts as they come and go.

观察这些念头的来来去去。

youdao

They come and go.

它们来了又去。

youdao

Problem with these online feed blenders is -they come and go.

以上这些线上feed合并服务的问题是，它们随时会消失。

youdao

"If they want to come over to the White House and go over line-by-line what is going on, I will be happy to do that,"

VOA: standard.2009.07.29

Their doors are open and people come and go everyday, but they're not really open for business.

他们敞开大门，人们每天进进出出，但是他们并没有真正在做事。

耶鲁公开课 - 金融市场课程节选

It's just some Friday nights they have raids and they can't come out and go out to the bars with us.

他们只在某些周五的晚上玩游戏组队突袭，所以他们就不能出来和我们去酒吧。

电子游戏 - SpeakingMax英语口语达人

Herculean tasks they come and go so easily, When her rods and her cones play.

NPR: BPP Jukebox: Blues Traveler

They usually behave like popular fashions, like the ones in design or clothing: they come and go, and sometimes reappear many years later under a slightly different guise.

FORBES: Management myths

Foreign politicians from America and Britain, for example, may bring a lot of pressure to bear on a dispute for a short amount of time, but inevitably they come and go according to the whims and demands of domestic politics.

ECONOMIST: Conflict resolution