Krystaldxe
1.Backwardness of Science and Technology2. Science and Technology lag behind从明清教育解析中国近代科技落后的原因A Probe into the Backwardness of Science and Technology of the Modern Ages of China from the Angle of Ming and Qing's Education中国科学技术在近代落后的原因初探The tentative research on the causes for the straggling of science and technology in modern ChinaThe Causes of Backwardness of Science and Technology in the Modern china
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楼主你好!fallbehind;lanbehind例句:1.backwardintechnique技术落后2.putanendtothebackwardnessofthemountainousareas改变山区落后面貌3.backwardintechnique.技术落后,新手回答谢谢采纳
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动词结构：science and technology drop/fall/lag behind (in science and technology)名词结构：underdeveloped science and technology a backward scientific and technological level scientific and technological retardation (极贬义）
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