1. The architect used concretes to build the foundation of the skyscraper.
建筑师使用混凝土建造摩天大楼的基础。

2. The workers poured the concretes into the molds to create the sidewalk.
工人们将混凝土倒入模具中，制成人行道。

3. The concretes dried quickly in the hot sun.
混凝土在炎热的阳光下很快干燥。

4. The construction company specializes in creating decorative concretes for outdoor spaces.
这家建筑公司专门为户外空间制作装饰性混凝土。

5. The engineer tested the strength of the concretes before approving them for use in the bridge.
工程师在批准混凝土用于桥梁之前测试了其强度。

6. The concretes were mixed with additives to improve their durability.
混凝土与添加剂混合以提高其耐久性。