But the company that made them was not able to get a patent for such an ancient idea.

但是制造呼啦圈的公司并不能为这一古老创想专利。

youdao

But the company that made them was not able to get a patent for such an ancient idea.

但是制造呼啦圈的公司并不能为这一古老创想专利。

youdao