Refer to Architect's General Specification for concrete strength and mortarmix.
混凝土强度及灰浆混合比例须参照建筑师之基本规范。
2
Several soldiers mix cement on the street, lifting it up to their colleagues who use it as mortar, placing a concrete block on top of concrete block.
几名士兵在街道上混合水泥，举给同事们当砂浆用，累砌混凝土块。
3
A couple of soldiers mix cement on the street, lifting it up by a backhoe to their colleagues who use it as mortar, placing concrete block on top of concrete block.