rarefied air meaning in Chinese

空气稀薄
稀薄空气
稀薄气

Midway up the slope , however , i staggered to a halt , gasping in the rarefied air , well before i reached the heights where the equations of einstein and dirac would have made sense
可惜才到半山腰，便开始步履踉跄；空气稀薄，使我气喘吁吁，不得不停下脚步，而爱因斯坦和狄拉克的方程式却仍旧远在高处。
Midway up the slope , however , i staggered to a halt , gasping in the rarefied air , well before i reached the heights where the equations of einstein and dirac would have made sense
登到山坡的一半时，我摇摇晃晃的停下来，呼吸稀薄的空气，这时，距离我能够理解爱因斯坦或狄拉克的方程式的高度还相差很远。
Still , to start on a brisk walk , and on such an errand as hers , on a dry clear wintry morning , through the rarefied air of these chalky hogs - backs , was not depressing ; and there is no doubt that her dream at starting was to win the heart of her mother - in - law , tell her whole history to that lady , enlist her on her side , and so gain back the truant
在一个干燥晴朗的冬季早晨，在白垩质山脊上清爽稀薄的空气里，她迈着轻快的步伐赶路她去完成自己的这样一项任务，心里并没有感到气馁。毫无疑问，她在动身时的梦想就是要讨她婆婆的欢心，把自己的全部历史告诉那位夫人，争取她站到自己一边来，这样她就能把那位逃走了的人弄回来了。