建造新的推进力系统，譬如核离子引擎可以提供我们回到月亮的能力，而且可以只用几星期而不是几个月去火星。

Building new propulsion systems, such as nuclear plasma engines, would provide us with the ability to go back to the moon, but also to go to Mars in a mission taking weeks rather than months.

youdao

建造新的推进力系统，譬如核离子引擎可以提供我们回到月亮的能力，而且可以只用几星期而不是几个月去火星。

Building new propulsion systems, such as nuclear plasma engines, would provide us with the ability to go back to the moon, but also to go to Mars in a mission taking weeks rather than months.

youdao