This artist's depiction shows a possible Earth-like planet with a rocky surface, oceans and an atmosphere. See more space tourism images.
模拟图描绘了类地行星，有岩石表面、海洋和大气。
We know the sun contains lots of helium, and as the solar wind has been depositing helium into the rocky surface of the moon, perhaps we can extract it.
我们知道太阳包含大量的氦，而太阳风将氦沉积在月球岩石表面的，也许我们可以提取它。
Drainage of the foundation pit formed the landing funnel of underground water which induce rocky surface collapse;
基坑排水形成地下水降落漏斗，诱发岩溶地面塌陷；
Drainage of the foundation pit formed the landing funnel of underground water which induce rocky surface collapse;
基坑排水形成地下水降落漏斗，诱发岩溶地面塌陷；
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