slips

She slipped on the ice.

她在冰上滑倒了。

Just slip out of the room while nobody's looking.

趁没人注意时溜出房间。

I don't know what went wrong, I must be slipping.

我不知道哪里出了问题，我一定是退步了。

a slip of paper

一张纸条

She's made one or two slips - mainly spelling errors - but it's basically well written.

她犯了一两个小错误——主要是拼写错误——不过基本上写得很不错。

One slip meant a long tumble to the rocks below.

一旦滑倒就意味着一路摔滚到下面的石头上。