人类实验中的毛毯的等效物是狗嘴中叼的球，旁观者可以看得见(犬类往往用嘴来操纵物品)。
The equivalent of a blanket in the human experiment was a ball held in the mouth of a dog which was being observed (dogs often use their mouths to manipulate things).
人类实验中的毛毯的等效物是狗嘴中叼的球，旁观者可以看得见(犬类往往用嘴来操纵物品)。
The equivalent of a blanket in the human experiment was a ball held in the mouth of a dog which was being observed (dogs often use their mouths to manipulate things).
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