沥青，人造沥青：某种厚厚的、黑而粘的物质，由炭焦、木焦或石油的剩余物中提炼出来，用于防水、盖屋顶、填缝和铺路。

Any of various thick, dark, sticky substances obtained from the distillation residue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving.

youdao

钢轨必须嵌入街道（在紧急情况下，消防员必须能够通过） 。材料可以从花岗岩块、沥青垫和人造草毯之间选择。

Steel rails must be incorporated into the streets (in an emergency, firefighters must be able to pass). Materials can range from granite cubes, asphalt mat or grass carpet.

youdao

钢轨必须嵌入街道（在紧急情况下，消防员必须能够通过） 。材料可以从花岗岩块、沥青垫和人造草毯之间选择。

Steel rails must be incorporated into the streets (in an emergency, firefighters must be able to pass). Materials can range from granite cubes, asphalt mat or grass carpet.

youdao