1.The boiler was too full of water, and black sooty mud soon covered the whole engine and the young engineer.
由于锅炉里水装得太满,黑色
煤泥很快就覆盖了发动机和年轻
工
师。
16.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
数量有所增加。