Because the Moon has no atmosphere, its surface is not subject to erosion, so it retains the marks of its early history.

由于月球没有大气层，它的表面不会受到侵蚀，所以它保留了早期历史的痕迹。

youdao

But considering that the moon has no atmosphere, and thus no wind, how can the flag be waving?

但是想想月球上没有大气，因此也没有风，国旗又如何能飘扬起来呢？

youdao

Mercury has no atmosphere to speak of, so there's no way for heat to circulate from the hot regions into the craters.

值得一提的是水星没有大气层，所以没有可以从高热量区向陨石流通的热能。

youdao

Scientists have long believed that Earth's satellite lacks the ability to hold water near its surface because it has no atmosphere.

VOA: special.2009.09.30

This was because they saw the black-drop effect in a transit of Mercury, a planet that has no atmosphere.

ECONOMIST: Transits of Venus

Later, when she began writing books, she fostered no atmosphere at all other than genteel squalor and heavy drinking and gloom.

NPR: Excerpt: 'Trauma'

Cooke says Earth was pelted by meteoroids at about the same time, but they hit the moon because it has no atmosphere to protect it.

CNN: Bright explosion on moon visible from Earth, NASA says