floated concrete

例句：

1. 1.The engineers used a special mix of sand and cement to create a layer of floated concrete for the foundation.
   工程师们使用一种特殊的沙和水泥混合物，为地基制作了一层浮筑混凝土。
2. 2. The construction crew had to carefully float the concrete in order to avoid damaging the delicate ecosystem.
   施工团队必须小心翼翼地将混凝土浮起来，以免损坏这个脆弱的生态系统。
3. 3.The project manager was pleased with the quality of the floated concrete, which had been tested to meet strict environmental standards.
   项目经理对浮筑混凝土的质量感到满意，这种混凝土已经经过测试，符合严格的环境标准。