n.尿素
A kidney also takes urea and mineral salts out of the blood. 肾还排出血液中的尿素和无机盐。
Sweat consists of water with small amounts of urea and salts. 汗液是由水和少量尿素和盐构成的。
n.局；办事处；(带抽屉的）写字台
n.官僚制度；官僚主义；官僚
n.官僚作风的人；官僚
adj.官僚的；繁文缛节的
官僚
n.桂冠诗人；得奖人
