The world, the terrestrialatmosphere, is full of filth.
这一世界，在地上的氛围中，充满了污秽。
2
Nitrogen N2 is a chemical inert gas and accounts for 80% of the terrestrialatmosphere.
氮n 2是化学隋性气体，在环地球大气中占有80%的份额。
3
Most models of planets assume that they are similar to the terrestrial planets in our own Solar System, with about half as much carbon as oxygen in the atmosphere.