Urea is commonly used as the source of nitrogen in foliage sprays.尿素作为氮素给源普遍地应用于叶面喷布.It must be broken down to urea, which consumes energy.它必须被分解成为尿素, 这时也要消耗能量.A kidney also takes urea and mineral salts out of the blood....
Courts have frequently used extrinsic aids to establish legislative intension.法院往往借助外部帮助以研究立法意图.Only the one who had tasted all the joys and sorrows of life and had gone through all the happiness and suffering of the wor...
The previously unidentified objects have now been definitely ascertained as being satellites.原来所说的不明飞行物现在已证实是卫星.I ascertained that she was dead.我断定她已经死了.It'should be ascertained if preventive or control procedures h...