Professor leung serves in the editorial boards of several international academic journals and is council member of several chinese professional organizations , including the association of chinese geographers and chinese association of geographical information systems 梁教授现时亦身兼数份国际学术期刊的编辑委员和数个中国专业团体的理事会成员，包括中国地理学会及中国地理信息系统协会。
Bonds were issued , and made their appearance on change ; phileas fogg bonds were offered at par or at a premium , and a great business was done in them . but five days after the article in the bulletin of the geographical society appeared , the demand began to subside : phileas fogg declined 但是，在福克先生出发后的第五天，皇家地理学会会刊发表了那篇论福克旅行的文章之后，市场上“斐利亚福克”开始供过于求，紧跟着“福克”证券便跌价了。
The lost city of the incas , machu picchu , lay hidden amid peru ' s misty peaks for three centuries , until its discovery in 1911 by hiram bingham , who then led three national geographic - yale university expeditions to the site , in 1912 , 1914 and 1915 秘鲁马丘比丘的印加古城一直不为世人所知， 3个世纪以来始终躺在薄雾覆盖的群山之中，直到1911年被希拉姆?秉汉姆发现，希拉姆?秉汉姆曾于1912 、 1914和1915年率领国家地理学会与耶鲁大学的探险队到该古城探险。
