可惜，宇宙中只有很少一部分氢原子存在于引人注目的恒星形成区。

But most of the hydrogen in the Universe isn't in some exciting, star-forming region.

youdao

可惜，宇宙中只有很少一部分氢原子存在于引人注目的恒星形成区。

But most of the hydrogen in the Universe isn't in some exciting, star-forming region.

youdao