The boiler was too full of water, and black sooty mud soon covered the whole engine and the young engineer.
由于锅炉里的水装得太满,黑色的煤泥很快就覆盖了发动机和年轻的工程师。
Often, the evolution of this kind of camouflage is detectable on a shorter timescale too - the populations of dark-coloured peppered moths grew in England, for example, as sooty pollution increased in the 19th century during the Industrial Revolution.
通常来说,在较短一段时间内也能观察到伪装的进化发展——例如,19世纪工业革命期间,烟尘污染增加时,英国深色胡椒蛾的数量有所增加。
Hepzibah attempted to enliven matters by a fire in the parlor. But the storm demon kept watch above, and, whenever a flame was kindled, drove the smoke back again, choking the chimney's sooty throat with its own breath.
Hepzibah 试图在客厅生火来活跃气氛。但是风暴恶魔一直在面守望,每当点燃火焰时,它就会再次驱散烟雾,用自己的呼吸窒息烟囱被烟熏黑的喉咙。