首先是尝试，这一阶段危险而辉煌，从未尝试过的新设备将人类带入未知世界，在地球以外的沙尘上留下自豪的脚印，插上国家的旗帜。
The first is tentative, dangerous and glorious, a voyage into the unknown perched on some untried piece of engineering, ending with proud footsteps in the alien dust and the planting of the flag.
旗帜的历史与人类的文明一样古老，不过对它的起源并不清楚。
Flags appear to be as old as civilized human society, though their origin is not well understood.
旗帜的历史与人类的文明一样古老，不过对它的起源并不清楚。
Flags appear to be as old as civilized human society, though their origin is not well understood.
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