bi.tu.men
n.（名词）Any of various flammable mixtures of hydrocarbons and other substances, occurring naturally or obtained by distillation from coal or petroleum, that are a component of asphalt and tar and are used for surfacing roads and for waterproofing.沥青，柏油：一种碳氢化合物和其他物质的易燃混合物，自然产生或通过蒸馏煤或石油而获得，是沥青和焦油的混合物，用于铺路和防水
来源：Middle English bithumen [a mineral pitch from the Near East] 中古英语 bithumen [近东的一种沥青] from Latin bitômen 源自 拉丁语 bitômen [perhaps of Celtic origin] [可能源于凯尔特语的]
【引伸】
bitu.minoid.
