建筑工人的头部砌砖砂浆和方法，以减少混凝土空心砌块，这造成了我们的问题。
Construction workers in the head with bricklaying mortar and methods to cut concrete hollow block, this has caused our problems.
建筑工人的头部砌砖砂浆和方法，以减少混凝土空心砌块，这造成了我们的问题。
Construction workers in the head with bricklaying mortar and methods to cut concrete hollow block, this has caused our problems.
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