Once we've established some measure of comfort or stability, we want to nail it in place so that there's no possibility of loss.

一旦我们认定了什么是好的，什么是稳定的，我们就想把它钉死而期望它决无再松动的可能。

youdao

Windproof: It is suitable for all kinds of roof, including that of high buildings due to its special way of installation – to nail it horizontally.

基于其独特的水平打钉安装方式，金属瓦适用于各种建筑屋顶，包括高层建筑。

youdao

What this objection is really saying is that people aren't comfortable with the idea of emergent design: letting the design of the system emerge, rather than trying to nail it all down at the start.

这种异议真正要说的是人们对 紧急设计（emergent design）这种思想感到不舒服：允许系统设计不断出现变化，而不是开始时就设法把一切确定下来。

youdao

But you can nail it to the wall and pull one end.

你可以将它钉在墙上,拉着它的一端

耶鲁公开课 - 基础物理课程节选

It took three more tests, including a lung-tissue biopsy, to nail it down as TB.

WSJ: TB's Global Resurgence Amplifies U.S. Risk

Above all, the sight of a made-up story about Europe should inspire the Commission boss to a desire to nail it, right now, before it gets picked up elsewhere.

ECONOMIST: European politics

Time after time Mr Blair vows to his intimates that he will tackle the American president on the Middle East peace process, or reconstructing Iraq after the war, but fails to nail it.

ECONOMIST: Andrew Rawnsley's political vivisection