妈妈,我们谈话时你不必陪着.Mommy, you don't need to stay while we talk.他谈话时，一架军用喷气式飞机在镇子上空呼啸而过。As he talked, an airforce jet screamed over the town.创作这本书的想法来源于跟菲莉帕·布鲁斯特的谈话。The idea for this book grew out of conversations with Ph...
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.直到不久以前,人们对胸腺的功能尚不明了.The function of the thymus was unknown until relatively recently.动物的免疫系统由两个主要部分组成,即胸腺和骨髓系统.I...
Softer fabrics are much more becoming than stiffer ones.软面料要比硬面料合身得多。She swathed her enormous body in thin black fabrics.她用薄薄的黑色织物裹住了自己硕大的身躯。She produces elegant wedding gowns in a variety of sumptuous fabrics.她用各种华贵的布料制...
在他当政期间,保证白人成年公民选举权的州越来越多.An increasing number of states granted white manhood suffrage during his administration.除此以外, 在里根当政期间对某些规定采取了自愿执行的办法.In addition, during the Reagan administration, a voluntary approach was taken ...