So much smoke was given off by the burning coal that the air soon became unbreathable .
燃烧着的煤发出如此多的烟，很快使空气不宜呼吸。
2
Here in the thicker medium of the unbreathable Fantoman atmosphere, great Breetai gazed down on a place out of memory.
在凡托玛无法呼吸的浓厚大气层里，大布里泰向下凝视着这片记忆之外的土地。
3
The above image was taken seconds after liftoff as the massive orbiter and six astronauts began a climb to a height where the atmosphere is so thin it is unbreathable.