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1. The concrete breaker was used to break up the large blocks of concrete.
混凝土破碎器被用来打碎大块的混凝土。
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2. The concrete breaker is essential for demolishing buildings and removing debris.
混凝土破碎器是拆除建筑物和清除碎片所必需的。
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3. The concrete breaker was used to level the ground before the construction began.
混凝土破碎器被用来平整土地，以便开始建设。