| environ. |
biofuel A gaseous, liquid, or solid fuel that contains an energy content derived from a biological source. The organic matter that makes up living organisms provides a potential source of trapped energy that is beginning to be exploited to supply the ever-increasing energy demand around the world. An example of a biofuel is rapeseed oil, which can be used in place of diesel fuel in modified engines. The methyl ester of this oil, rapeseed methyl ester (RME), can be used in unmodified diesel engines and is sometimes known as biodiesel. Other biofuels include biogas and gasohol (一种从生物源得到的含有能量的气体、液体或者固体燃料。组成有机体的有机物，为被困能源提供了潜在的来源，开始在全世界被用来满足不断增加的能源需求。生物燃料的一个例子是菜籽油，它可以用来替代改良发动机的柴油。这种油酸甲酯，油菜籽甲基酯(RME)，可以在未修改的柴油发动机中被使用，它有时候被当做生物柴油。其他一些生物燃料有沼气和乙醇汽油。) |
