3.She's always popp<>n class="key">ing in and out.
她总是进进出出。
4.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都解释清楚。
5.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喝了一口，眼睛仍旧迷望着酒吧间里憧憧往来人影。
6.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带, 像蛇一样弯弯曲曲自西南向东北延伸, 全长两千多英里。
7.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.
是非曲折。
观点；若发现问题，欢迎向我们指正。
走进
都解释清楚。
