这一招前人已经用过。

It has been done before.

youdao

尽管已经用过丰盛的早餐，他午餐还是吃了很多。

He managed to eat a big lunch despite having eaten an enormous breakfast.

youdao

实际上，您可能已经使用过它们。

In fact, you might already be using them.

youdao

如果主机名已经被使用过了，那么这个问题是可以解决的。

If host name is used, it should be resolvable.

youdao

这些变量在模板中可能已经使用过了，例如id和value。

Some of these are already used in the template, such as id and value.

youdao

有可能你已经看见过它，就是没有使用过。

Chances are, you've seen it, but you don't use it.

youdao

因为我真的已经使用过这个产品，而且收效甚好所以我才推荐它。

I recommend it because I've actually used this product and have seen the results.

youdao

过去我已经使用过这些技术，下面是一些例子。

Below are some examples that I have applied this technique to in the past.

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这张图片已经被许多人使用过了。

This picture has been used by many others.

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手表的哪个部份在别人用之前已经被用过了？

What part of a watch was used before by someone else?

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我已经看到这么多次，直到现在，但我从来没有使用过自己。

I have seen this so many times until now, but I never used myself.

youdao

我已经看到这么多次，直到现在，但我从来没有使用过自己。

I have seen this so many times until now, but I never used myself.

youdao