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1·He had materialized out of thin air; I had not seen or heard him coming.

他突然神秘地出现了；我既没看到也没听到他进来。《柯林斯英汉双解大词典》

2·It's universally acknowledged that success never comes out of thin air.

人们公认，成功永远不会凭空产生。

3·When that happens, we pretty well prance around the house like we've somehow magically manufactured a day out of thin air.

当这种情况发生时，我们就会在屋子里欢蹦乱跳，就好像凭空变出了一天似的。

4·Things are not made up in Frost, not made up in the sense of imagined, but called up out of thin air, like fairies and elves.

在弗罗斯特的作品中，事物不是“虚构的”，不是想象中的“虚构”，而是凭空虚构出来的，就像仙女和精灵一样。

5·Appear out of thin air.

在稀薄的空气里出现。

6·What you have said is out of thin air.

你所说的全是无中生有。

7·I can't simply conjure up the money out of thin air.

我是不能像变魔术似的把钱变来。

8·The success of the demo did not come out of thin air.

这场演示的胜利并不是无中生有的。

9·How can we believe you? What you have said is out of thin air.

我们怎能相信你？你所说的全部是无中生有。

10·Unfortunately, I can't just conjure up the money out of thin air!

遗憾的是，我可不能用戏法凭空变出钱来。