词汇	age population
释义	age population 人口老龄化
随便看	positive functional positive functions positive energy positive energy balance positive-energy state positive energy theorem positive energy wave positive enhancement positive entire solution positive entire solutions positive entropy Positive equality positive equilateral triangle structure positive equilibrium Positive equilibrium of equation positive equilibrium point positive equilibrium points positive error positive estuary Positive ethical dimention positive eugenic measure positive eugenics positive eugerics positive euphemism positive europium anomaly