Stack Overflow is a programming Q & A site that's free.

StackOverflow是一个免费的编程Q&A网站。

youdao

Q: How does it qualify as' free energy '?

问：它是如何符合'自由能' ？

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Q. Let's talk about the economy. The 21st century world is a free-market world.

让我们谈谈经济。21世纪的世界是自由市场的世界。

youdao

Q. Let's talk about the economy. The 21st century world is a free-market world.

让我们谈谈经济。21世纪的世界是自由市场的世界。

youdao