### Chinese: 彗星可能是地球上的水和有机物的来源，这些有机物可以形成蛋白质并维持生命的存续。
### English: Comets may have been the source of Earth's water and inorganic matter that can form organic proteins and sustain life.

### Improved English: Comets may have been the source of Earth's water and organic matter that can form proteins and sustain life.
