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

房屋被损毁，煤气道破裂造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.

它是美国最大的然气配送公司，拥有超过100,000英里的燃气总。

The heater will run off mains gas or bottled gas.

【main】加热道煤气或罐装煤气均可。

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.

木结构的维利亚式砖房无法承受摇晃的力量，烟囱破裂，水和煤气总破裂。