词汇	progress of mankind
释义	progress of mankind 人类的进步
随便看	secondary battery secondary battery cell secondary battery hybrid system secondary beam secondary beams secondary-beam scheme secondary behavior secondary bench of Yellow River secondary bending secondary bending moment secondary beneficiary secondary benefit secondary benefits secondary beta-ray secondary Betula platyphylla forest secondary bibliography secondary bifurcation secondary bifurcation buckling secondary bile acid secondary biliary cirrhosis secondary biliary dyskinesia secondary billing Secondary biochemical effluent secondary biogenetic-pyrogenation gas Secondary biogenic gas