concrete batcher

例句：

1. 1. The construction site needed a concrete batcher to mix the fresh concrete.
   施工现场需要一台混凝土搅拌器来混合新鲜的混凝土。
2. 2. The concrete batcher was used to mix the cement and sand for the foundation of the building.
   混凝土搅拌器被用来混合水泥和沙子，为建筑物的基础做准备。
3. 3. The concrete batcher was responsible for mixing the concrete, ensuring it met the required strength standards.
   混凝土搅拌器负责混合混凝土，确保其达到所需的强度标准。