彗星上的重力非常小，以至于一束反射的光都会将着陆的探测器送回太空。

The comet's gravity is so low that even a slight bounce could have sent the probe careering back into space.

youdao

后来他们着陆了。马克很高兴能够安全返回地面。他用颤抖的声音对他的朋友说： ：“乔治，非常感谢你让我乘小飞机做了两次飞行。”

When they came down again, Mark was very glad to be back safely, and he said to hisfriend in a shaking voice, "Well, George, thank you very much for those two trips in your plane."

youdao

后来他们着陆了。马克很高兴能够安全返回地面。他用颤抖的声音对他的朋友说： ：“乔治，非常感谢你让我乘小飞机做了两次飞行。”

When they came down again, Mark was very glad to be back safely, and he said to hisfriend in a shaking voice, "Well, George, thank you very much for those two trips in your plane."

youdao