Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel to be tough - Franklin D. Roosevelt, 32nd U.S. president
  • 王玉慶理事長在中國環境科學學會第七次全國會員代表大會閉幕式上的講話
  • 關于年會

會員登錄