The earth's atmosphere decreases so rapidly in density, that half its mass is within 3 1 / 2 miles above the sea; and at 80 miles high there can be practically no atmosphere.
出自： E. DenisonThe atmosphere of Mars contains about 95 percent carbon dioxide.
出自： B. LovellIt must be..some trick of the atmosphere, the stillness and dryness of the air.
出自： W. Boyd