finished concrete

例句：

1. 1.The construction crew finished the first layer of the new road last week.
   施工队上周完成了新路的第一层。
2. 2. The engineer recommended using a different type of concrete for this project.
   工程师建议使用不同的混凝土类型进行这个项目。
3. 3. The poured concrete was so hard that it could not be easily broken apart.
   浇筑的混凝土非常坚硬，难以被轻易打碎。