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—...
我正打算到邻近的图书馆跑一趟。I was going to pop up to the local library.辅音往往被其邻近的辅音同化.Consonants are frequently assimilated to neighboring consonants.我们通常到邻近的商店采买.We patronize our neighbourhood stores....
The campfire smouldered for hours after the blaze died out.营火在火焰熄灭后闷烧了好几个小时.The campers lit torches from the campfire.露营者用营火点燃火把.A group of boys and girls gathered around the campfire to sing songs.一群孩子围着一堆篝火唱歌....
她多给他加了一勺浓缩奶油。She gave him an extra scoop of clotted cream.实际上，它是用来将铀浓缩以制造武器。It was actually used for enriching uranium to weapons-grade levels.加一点蜂蜜或浓缩苹果汁或梨汁，让菜带点甜味。Sweeten dishes sparingly with honey, or con-centrated a...
The experiment above confirmes that sodium ferulate can antagonize ETB on Ast and displays protective function.上述实验证实,阿魏酸钠可拮抗星形胶质细胞上的ETB发挥保护作用.Conclusion: Burned serum may up - regulate ETB receptor.结论: 烧伤血清可上调亚型B内 皮素受体....