Coalgas rivaled smoky oil lamps and flickering candles, and early in the new century, well-to-do Londoners grew accustomed to gaslit houses and even streets.
At that time, the coalgas of my home had changed to pipe and the former gas pot was useless.
那时，我家煤气改管道，原来的罐子没用了。
3
ii. Tap water, heating, air conditioning, hot water, coalgas, lipuefied petroleum gas, naturalgas, methane gas, coal/charcoal products for household use;