Uracil -- a pyrimidine found in RNA that base - pares with adenine.尿嘧啶 -- 核糖核酸中的一种嘧啶,与腺嘌呤形成碱基对.The missile control system composed of two pares, the controller and the controlled object.粗略地看,导弹控制系统都是由控制器和被控对象两大部分组成的....
我站了起来，几乎跌倒，身体摇晃着靠在甲板的围栏上。I stood up and almost fell, reeling against the deck rail.当他赶上那个男人时，他装出了要跌倒的样子。As he drew abreast of the man he pretended to stumble.她一阵晕眩，跌倒在地。She slumped to the ground in a faint....
Cystic fibrosis is the commonest fatal here-ditary disease.囊性纤维化是最常见的致命遗传疾病。Gall - blader disease and cystic fibrosis also often involve me.胆囊疾病和胰腺囊性纤维性变也常常纠缠我.The tie on the cystic duct may slip off.在胆囊管上的结扎可能滑脱....
Reggie reacted with the same affronted horror Midge had felt.雷吉的反应是又羞愤又害怕，和米奇的感觉一样。With scented tea of midge of inapproachable card report harmful to the baby?用无敌牌电蚊香片对婴儿有害 吗 ?Midge's forehead furrowed as she saw th...