相邻两笼可通过锁紧装置连接起来，打开小门后，动物可在多个笼子内跑动，给动物适当的活动；
Two neighboring cages can be connected through lock device. With small doors open, animals can run through several cages, thus giving them proper activities.
相邻两笼可通过锁紧装置连接起来，打开小门后，动物可在多个笼子内跑动，给动物适当的活动；
Two neighboring cages can be connected through lock device. With small doors open, animals can run through several cages, thus giving them proper activities.
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