Conservationist Maria Diekmann visits Vietnam, Thailand and China to show how unusual scaly mammals called pangolins have become one of the most poached and illegally trafficked animal species in the world. 　　環(huán)境保護者瑪麗亞·迪克曼訪問了越南、泰國和中國，展示了被稱為穿山甲的不尋常的鱗片哺乳動物已經(jīng)成為世界上最被偷獵和非法販運的動物物種之一