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在青啤集团车间的一个角落,因工作需要,放置了一个活动的梯子。用时就将梯子支上;不用时就把梯子移至拐角处。为了防止梯子
In a corner of Tsingtao Brewery’s workshop, an activity ladder was placed on the job site. Use the ladder when the branch; not when the ladder moved to the corner. In order to prevent the ladder