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1.The crack-cleaning machine is an essential tool for maintaining the safety of our buildings.
裂缝清洁机是我们建筑物安全维护的必备工具。
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2. The crack-cleaning machine can effectively remove the dirt and debris from the cracks in the wall.
裂缝清洁机能够有效地从墙壁上的裂缝中清除污垢和碎片。
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3. The crack-cleaning machine has greatly improved the efficiency of our building maintenance team.
裂缝清洁机大大提高了我们建筑维护团队的效率。