unfluxed asphalt

例句：

1. 1. The road was repaved with unfluxed asphalt to improve its durability.
   为了提高道路的使用寿命，这条路被重新铺上了未掺合沥青的沥青。
2. 2. The construction crew used unfluxed asphalt to lay down the new asphalt pavement.
   施工队使用未掺合沥青的沥青铺设了新的沥青路面。
3. 3.The engineer recommended using unfluxed asphalt for the project due to its superior performance.
   由于其卓越的性能，工程师推荐项目采用未掺合沥青的沥青。