So Ruth Trimble basks in the warmth coming off her gas boiler, which a couple of years ago replaced the oil heat system in her mid-century home in Middletown, Pennsylvania.
One of the cars he was towing flew off and struck a house, crushing the air conditioner and gas main system, according to Fire Chief Barry Kobrin.
他拖的其中一辆车飞了出去撞到了一所房子上，撞碎了空调和天然气主要管道。据消防队长Kobrin说。
3
For keeping tank pressure in design range, some of boil offgas need to be released form tank through boil offgas treatment system in order to control tank pressure.