To tie-dye, you need to first use tools to tie, sew, or clip your cloth.

要进行扎染，你首先需要使用工具来扎、缝制或夹住布料。

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Now let's look at the first use case.

现在我们来看第一个用例。

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When did you first use theterm “net neutrality”?

您是什么时候第一次使用“网络中立”这个词？

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These included the first use of "hard hats" to protect the workers' heads and special glasses to protect their eyes.

VOA: special.2010.07.23

But it's not the first use of the term "bug."

但是这并不是bug这个词的第一次使用“

麻省理工公开课 - 计算机科学及编程导论课程节选

So, regardless of the type of wave that we're talking about, there's some common definitions that we want to make sure that we're all able to use, and the first is amplitude.

所以，不管我们讨论的,是哪种波，它们都有一些我们,能用到的共同的定义,其中第一个就是幅值。

麻省理工公开课 - 化学原理课程节选

When you first use Pokki the service installs a Pokki icon on your desktop.

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Every secret weapon developed in the cyber domain remains secret only until first use.

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It was the first use of compulsory licensing under Indian patent laws passed in 2005.

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