珍贵无比的事物，对于地球而言。

precious to the earth.

youdao

对于地球，同样是一场灾难。

And it will be a disaster for the planet.

youdao

对于地球工程还有很多科学困惑。

There are still many scientific doubts about geo-engineering.

youdao

In fact, just because the world is round, you can already see if this is the Earth, to somebody that's the natural direction.

实际上,正由于地球是圆的,你们可以看到如果这是地球,对于某些人来说这才是惯常的方向

耶鲁公开课 - 基础物理课程节选