但四十五亿年前，在我们的星球诞生时，它只不过是一个炽热炼狱。

But four-and-a-half billion years ago, when our planet was born, it was just a molten inferno.

youdao

但四十五亿年前，在我们的星球诞生时，它只不过是一个炽热炼狱。

But four-and-a-half billion years ago, when our planet was born, it was just a molten inferno.

youdao