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感受机械魅力，挖掘机、推土机工作场面盘点，认识机械世界09集
推土机、压路机、装载机同时出现在工地，联合施工场面。
《看大挖机 听小故事》7/15
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推土机、压路机、装载机同时出现在工地，联合施工场面。
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