Puffing a little, Mabel shifted her weight onto her feet...梅布尔喘了口气，把身体重心移到脚上。When I got to the top I was huffing and puffing.我到达顶端时累得直喘.I know nothing about boxing, but I could see he was unfit, because he was puffing.我对...
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—...
Suddenly he heard a rustle in the peony pavilion and someone sighing deeply.他忽闻有人在牡丹亭畔长吁短叹.What are you sighing about?你为什么唉声叹气?What are you sighing about? Is something wrong?你叹息什么? 出什么事了?Sighing for sorrow can be harmful...
我是个罪人，必须忏悔我的罪过。I am a sinner and I need to repent of my sins.你干脆去教堂忏悔自己的罪过吧。You just go to the church and confess your sins.罗马教廷对堕胎的教义非常清楚：这是罪过。The Vatican's teaching on abortion is clear: it is a sin....