Aspen recently announced a deal where children fly free.

白杨（Aspen）滑雪场最近宣布了一个儿童能免费乘坐飞机的旅游项目。

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Grandpa let the fireflys fly free as he leaved. Maybe this one is coming back to see him?

后来，爷爷把所有的萤火虫都放走了，这一只，是不是回来看他的呢？

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CAROL: Yes. I think they should just let them fly free, and not try to sell them to foreigners. It is a kind of destruction of nature.

卡罗：是的，我认为应该让他们自由地飞翔，而不是试着卖给外国人，这样有点破坏自然。

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She believed that training women to serve as support pilots at home could free up men to fly combat operations overseas.

VOA: special.2010.11.08

Supposedly, the former would swiftly fly free, while the latter would remain in bankruptcy and be slowly wound down.

ECONOMIST: America's car industry

Bags fly free, but they don't always get there.

WSJ: The Leader in Lost Bags, Canceled Flights

You've probably seen Southwest's "Bags Fly Free" commercials.

FORBES: On The Cover/Top Stories