Earlier this year Professor Hawking warned that exploring space may not be entirely without risk.

在今年早些时候，霍金教授警告，探索太空不是完全没有风险的。

youdao

Earlier this year Professor Hawking warned that exploring space may not be entirely without risk.

在今年早些时候，霍金教授警告，探索太空不是完全没有风险的。

youdao