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.

几年前，住在宾夕法尼亚州米德尔敦的Ruth Trimble换掉了她中世纪风格的家里的燃油取暖设备，而改用煤气锅炉来取暖。

youdao

The studio also replaced windows to improve thermal performance and replaced an antiquated oil-fired boiler with an energy-efficient, propane-powered system.

工作室也替换了窗户以改善保温层，将过时的燃油锅炉变成了节能的丙烷动力系统。

youdao

This kind of boiler is very safe. If it were to go wrong, the controlling system would cut off the fuel oil supply automatically.

这种锅炉很安全。万一锅炉发生故障，控制系统会自动切断燃油的供给。

youdao