另两个为胸腺嘧啶和胞嘧啶, 即称为嘧啶的单环结构.The other two, thymine and cytosine, are single ring structures called pyrimidines.嘌呤为嘧啶取代或嘧啶为嘌呤所取代,叫做颠换.The substitution of a purine for a pyrimidine, or vice versa is a transversion.本文研究氟脲嘧啶(5—...
He is a good friend that speaks well of us behind our backs.背后说好话,才是真朋友。Mark's always slagging off his friends behind their backs.马克老是在背后诋毁他的朋友.No, aboriginals have poor parodies of Eofol or Nighon horses, with hump...
We need make a incise estimate in addavance.我们需要事先作出准确的估计.Its own estimate of three hundred tallies with that of another survey.其估计数目300与另一项调查的结果相吻合。It's very difficult to give a reliable estimate...要给出可靠的估计非常困难。His...
渔船和游艇跟随着大型班轮进入了港口.Fishing boats and pleasure - craft followed the great liner into the harbour.班轮正在船坞修理.The liner is in dock for a refit.那艘班轮遇到巨大海浪而沉没.The liner foundered in heavy seas....
May want to know now the Shaolin Temple and Longmen ticket prices.想了解五一龙门和少林寺现在的门票价格.In the Qing dynasty, the army destroyed the South Shaolin Temple.在清朝, 朝庭的军队摧毁了南方少林寺.Yesterday, we visited Daxiong temple hall of Shaoli...