请高人帮我翻译一下这句话用英文怎么说 谢谢

Let it slip through the fingers like this.

这是固定说法。

let it go off the interval

Just like this, let something already in my hands go in front of my eys.

when it goes away from my fingers' aperture,I can do nonthing.

Let it slip through fingers

It is just slip away from my fingertips.