不用说也知道，行星环境改造不是一个简单的过程。
同一颗行星的一部分，它是每个人的责任和国家保护全球环境。
As part of the same planet, it is the responsibility of each individual and nation to protect the global environment.
它可能不是那种至少我们所知道的生命形式能够舒适生存的环境。不过这个行星实际上是在一个我们叫做“可居住带”的轨道上运转。
It might not be the sort of place that, at least life as we know it, would find to be a comfortable environment.
大气的行星和行星际空间环境特征进行了研究。
The environment characters of atmosphere of planetary and interplanetary space are studied.
大气的行星和行星际空间环境特征进行了研究。
The environment characters of atmosphere of planetary and interplanetary space are studied.
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