在世纪之交百年一遇的大好日子里 ,我们怀着十分尊敬的心情 ,庆祝李世忠先生献身探矿工程事业 50周年暨 80华诞 ,衷心祝愿老人家福如东海 ,寿比南山。李先生年青时代正值日本帝国主义侵华的高潮时期 ,他怀着一颗救亡图存、科学救国之心 ,千里迢迢 ,克服无数艰难险阻以优异的成 At a golden day of every century in the turn of the century, with great respect, we celebrate the 50th anniversary of Mr. Li Shizhong’s dedication to prospecting engineering and his 80th birthday. We sincerely wish the elderly such as the East China Sea and Shoubi Nanshan. At a time of high climax of the Japanese imperialist invasion of China, Mr. Young, in his youth, survived thousands of miles with a picture of saving the nation and saving the nation with science,