mass noun
1- a mixture of dark bituminous pitch with sand or gravel, used for surfacing roads, flooring, roofing, etc.沥青和黄沙（或碎石）的混合物（用于铺路、铺室内地坪或铺屋顶）
1.1
- the pitch used in this mixture, sometimes found in natural deposits but usually made by the distillation of crude oil沥青。
派生词
asphaltic
adjective词源
late Middle English: from French asphalte, based on late Latin asphalton, asphaltum, from Greek asphalton.