你可以什么费用都不收取，一美分，一美元，或者十亿美元。

You can charge nothing, a penny, a dollar, or a billion dollars.

youdao

或者你认为你是一个数十亿美元的世界？

Or you think that you are one of the billions in the world?

youdao

或者你认为你是一个数十亿美元的世界？

Or you think that you are one of the billions in the world?

youdao