例句 /

Because the only source of heat that could melt the entire moon would be a very rapid accumulation of small bodies, the presence of large quantities of anorthosite in the lunar crust supports the theory that the moon coalesced from the debris of a planeta

详情正文

登录后查看完整内容

使用 DeepEvidence / 梅斯账号登录,新用户可在登录页面注册。

登录成功后将返回当前页面,继续浏览。