Even if it is air, it could have been there before the obstruction.

After dark there come some visitors-noiseless visitors, with shoes of felt-who have been there before;

天黑以后来了几个人，他们穿着毡鞋，默不作声，以前就曾经到这里来过。

After dark there come some visitors noiseless visitors, with shoes of felt who have been there before; and with them comes that bed of rest which is so strange a one for infant sleepers.

天黑以后来了几个人，他们穿着毡鞋，默不作声，以前就曾经到这里来过。随着他们来的是一张安息的床，这是一张多么奇怪的给孩子睡眠的床啊！

They would have been there before the war, or before they were forced to go to the camps.

在战争之前，在他们被迫进入难民营之前，他们应该在这里。

Jessica: Yes, I have been there before.

知道，我以前去过。

You have been there before, you know pretty much what will happen.

但事情通常都不是你想的这么严重。

But we have been there before and know what is required.

但我们有的是经验，知道冠军应当怎样。

We have been there before, she said on Monday, Dec. 2. The comparison bears consideration; what follows is a series of photo pairings& smog in London then, and in China now.

12月2日（星期一），她说：我们也曾遇过这个问题。通过系列图片来对比当时的伦敦和现在的中国，将很有意义。

Talk regularly with peers and advisors who have been there before you.

定期的和在你之前获得成功的同事和顾问们交流。

Some of the best places to go for answers are to those who have been there before via a local user group or one of the many online developer-centric mailing lists.

这些问题的最佳答案应该到先行者那里去寻找，他们可能存在于某个本地用户社区，或者众多在线的开发者邮件列表中的一个。

I have been there twice recently.

我最近去过图书馆两次.

I have been there twice.

我去过两回.

The play was very amusing, you ought to have been there.

此剧很有趣, 你应该去看.

The play was very amusing; You ought to have been there.

此剧很有趣; 你应该去看.

He may have been there, but I did not see him.

他可能到那里去了, 但我没看见他.

I have been there many times since the war.

自那次战争以来,我曾去该地多次.

You know so much about the city. You must have been there.

您对该市这么了解, 一定是去过那儿.

Back then, only a few natives could have been there to see it land.

然而却仅有几个当地人曾亲眼目睹它的坠落.

Then you have been much juster to us than we have been to you.

那么,你很对得住我们,我们却待你太坏了.

Once we laid down the challenge, our next move should have been to follow it up.

我们一旦接受了挑战, 下一步的行动就应该紧紧跟上.

Of course, we have been to the monster church of St. Peter, frequently.

不用说, 我们常到巍峨的圣彼得教堂.