The coal-fired steam engine was taking over, and the waterwheel was fast becoming obsolete.
烧煤的蒸汽机开始占领市场，于是水车很快就过时了。
2
As American and European electricity generators switch from coal to cleaner-burning gas, the market for large gas turbines is growing fast.
随着美国和欧洲的发电能源从煤向清洁燃烧能源的转变，大型燃气涡轮机的市场正快速增长。
3
The price of coal is rising fast, with the power-coal contract price increasing by about RMB50 per ton over the same period last year, the Beijing News reported Monday.