他说：“这个公式让大家意识到，地球在宇宙中是多么珍贵，同时也会帮助社会理解我们所拥有的资源。”
He also said: 'The formula makes you realise just how precious Earth is and I hope it will help us as a society safeguard what we have.
很快他就发现他们无论谈什么问题都能综合地运用知识，对社会和宇宙具有深沉而系统的理解。
He swiftly saw, no matter upon what they talked, that each man applied the correlation of knowledge and had also a deep-seated and unified conception of society and the Cosmos.
一个叫做“火星社会”的宇宙鼓吹团体已经进行了一系列模拟火星访问的任务，包括一个80人的沙漠站点和另一个12人的更偏远的北极基地。
The Mars Society, a space-advocacy group, has conducted a series of simulated Mars missions involving 80 crews at a desert station and a dozen crews at an even more remote Arctic base.
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