in-and-out

I don’t know all the ins and outs of the case.

我不知道这个案子的是非曲折。

She keeps popping in and out.

她不停走进走出。

She's always popping in and out.

她总是进进出出。

It would take me too long to explain all the ins and outs of the problem.

我可没有那么多时间把问题的详情都解释清楚。

Wu Sun-fu muttered to himself and took a sip at his glass. He was still staring dazedly at the blurred shapes passing in and out of the bar .

吴荪甫自言自语拿起酒杯来口，眼仍旧望着酒吧间里憧憧往来的人影。

Lying as it does in the deep waters of the Western Pacific, Japan winds in and out like a snake from southwest to northeast, a distance of more than two thousand miles.

日本这个国家位于西太平洋的深水带, 像蛇样弯弯曲曲自西南向东北延伸, 全长两千多英里。

If it is too slopy it is more tiring to mow the lawn.And just have to remember that your car might skid when you go in and out of the garage when snow.

对哦,前面的草坪清理问题我还没考虑到.倒车出来的问题真是有的,我去试下,正常天气里,都很难受,感觉象要倒滑下去似的.