一开始你可能不会这样认为，因为太阳系里和彗星发生过碰撞的行星都比火星还远，在那样的轨道上水永远是以冰的形式存在。

On first blush, you might think not: the planet where the comet or comets came to grief is farther out than Mars, in an orbit where water would be permanently frozen.

youdao

如果仔细地观察太阳，你和太阳之间同样有一条脐带，因为没有了太阳，就没有光明，没有热量，没有温暖，没有食物，没有净菜。

And if you look at the sun, there is an umbilical cord linking you with the sun, because without the sun there would be light, no heat, no warmth, and no food, no washed vegetables.

youdao