Puren普伦pureadj.纯的；纯洁的；纯粹的pure-oxygen aeration纯氧曝气pure delay river model纯延时河流模型pure variable approach纯变量pure peasant household纯农户pure red-cell anemia纯红细胞性贫血pure and original text(未经窜改的)真本pure inseparable field纯不可分域pure motor hemiparesis纯运动性轻偏瘫pure red greek saffron纯净希腊红花pure electric vehicles纯电动汽车