Multiple buildings are seen damaged, and broken gas mains caused fires in several neighborhoods.

许多房屋被损毁，管成许多附近的居民区发生火灾。

It is the largest gas distribution company in the United States, maintaining over 100,000 miles of gas mains.

它是美国最大的然配送公司，拥有超过100,000英里的燃总管。

The heater will run off mains gas or bottled gas.

【main】加热器用管或罐装均可。

The Victorian brick  buildings with their wooden frames could not withstand the force of the shaking, chimneys  cracked, and water and gas mains were broken.

木结构的维多利亚式砖房无法承受摇晃的力量，烟囱，水和总管。