There are just four kinds: adenine, thymine, guanine and cytosine.只有4种: 腺嘌呤 、 胸腺嘧啶 、 鸟嘌呤和胞核嘧啶.The DNA base composition is 32.6 - 33.1 mol % guanine plus cytosine.DNA(脱氧核糖核酸)的G+C 摩尔百分含量为32.6—33.1.It is a layer of guanine ...
...an edited version of the speech.经校订的演讲稿...'Exiles' by James Joyce, edited with an Introduction and notes by J C C Mays.詹姆斯·乔伊斯的《流亡者》，由J.C.C. 梅斯作序并注释Navigates in menus, lists, choice screens and into edited t...
a hopeless footballer不中用的足球运动员I don't drive and the buses are quite hopeless.我不开车，公共汽车条件又太糟糕。Who wouldn't have preferred this with life so pointless, bitter and hopeless?谁不喜欢这样呢,生活既是那么无聊, 痛苦,无望!The economic cri...
在胸骨前只有很少可用的肌肉能够缝合.There is little available musculature to suture anterior to the sternum.此后, 喙 、 爪和胸骨变得很软和易弯曲.Later, the beak, claws and keel become very soft and pliable.由食管炎引起的胃灼热,其部位发生于胸骨下.The heartburn associated oe...
There had been a skirmish in the half light of dawn.天朦朦亮的时候曾经有过一场小规模的战斗.The verbal skirmish is viewed as the opening round in negotiation schedules to start next Tuesday.这场争论被看作预定下星期二举行的谈判的序幕.A conventional skirmish woul...
The MOD gave an undertaking to Saville that it had provided him with all relevant material.国防部向萨维尔保证已向他提供了所有相关的资料。The mansion in Saville Row , though not sumptuous, was exceedingly comfortable.赛微乐街的住宅并不富丽堂皇, 但却十分舒适.He li...