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来源:雅诚德英语网
To demonstrate, Justin, one of Pepperberg's undergraduate assistants, instructs Griffin and Alex to hop up on the work perch.
为了演示,佩珀堡的一个大学生助手贾斯廷指导格里芬和亚历克斯跳到高处工作架上去。
To demonstrate, Justin, one of Pepperberg's undergraduate assistants, instructs Griffin and Alex to hop up on the work perch.
为了演示,佩珀堡的一个大学生助手贾斯廷指导格里芬和亚历克斯跳到高处工作架上去。