something with a usable capacity for doing worksuch nonrenewable fuels as coal, petroleum, and natural gas
such nonrenewable fuels as coal, petroleum, and natural gas
energy, power
kindling, propellant(also propellent)force
in the 13th century
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。