The cell membrane controls the movement of substances in and out of the cell.

细胞膜控制物质进出细胞。

He'd been in and out of the hospital.

他曾进出过医院。

He adds that people slip in and out of decision roles.

他还认为，人们在决策角色上穿梭自如。

We went in and out of the building about fifty times, trying to act terrified.

我们在大楼里进进出出大约50次，试图表现出惊恐的样子。

Indeed, people tend to dip in and out of poverty, perhaps due to unexpected obstacles.

事实上，人们往往会陷入和摆脱贫困，也许是由于意想不到的障碍。

I've spent the past ten years in and out of jobs.

在过去的十年里，我一直在失业。

In and out of class

在课内课外

In and out of the cylinder.

活塞在汽缸作来回的滑动。

Dip the chicken in and out of water

用勺将开水浇在鸡肉上

They can go in and out of MOD radar.

它们可以悄无声息地进出雷达区。