相关Americ的文学知识

问题详情：JosephFrancisCharlesRock(1884–1962)wasanAustrian-Americanexplorer,botanist,andanthropologist(人类学家).Formorethan25years,hetravelledextensivelythroughTibetandYunnan,Gansu,andSichuanprovinces...