Sometimes they miss a step or appear to blow out something.

有时，他们会踏空台阶，或者像是从体内吹出了某种气体。

Harry felt a great jolt in his guts as though he had just missed a step going downstairs.

哈利感到心里猛地忽悠一下，好像下楼梯时一脚踏空了一样。

I missed a step on the stairs and I'm afraid I sprang my ankle。

嗯。

Harry turned to look at her and his stomach gave a weird lurch as though he had missed a step going downstairs.

哈利转身望着她，他的内心突然出现了一阵古怪的痉挛，就好像他下楼时踏空了一级台阶。

Several people sniggered. Harry saw Cho laughing and felt the familiar swooping sensation in his stomach, as though he had missed a step going downstairs.

几个人偷偷地笑。哈利看到秋也在笑，心里又是一跳，好像下楼时一脚踩空了似的。

We are, I think, the weft, trying to find our way around the form, being careful not to miss a step or make a mistake, or for some of us, trying not to unravel altogether.

我们是，我认为，纬线，试图找到我们周围的形式，小心不要错过一步或犯错误，或者对我们中的一些人来说， 试图不完全解开。