总被人嘲笑是很让人灰心的.It is very discouraging to be sneered at all the time.他们不得不与高涨的物价作长期而灰心的斗争.They have had to wage a continual despairing fight against the rise of prices.使整个队感到灰心的失败.A failure that dispirited the team....
Mediterranean oat held to be progenitor of modern cultivated oat.地中海地区燕麦,被认为是现代栽种燕麦的祖先.He was also a progenitor of seven presidents of Nicaragua.他也是尼加拉瓜7任总统的祖先。The newly - formed variety would probably inherit from its p...
Identification of a Rice cDNA Encoding the Acyl CoA binding Protein ( ACBP )一种水稻酰基辅酶A结合蛋白cDNA的鉴定 ( 英文 )This activator is acyl amine - the hafnium activator that ether is a foundation.该催化剂为酰胺 - 醚为基础的铪催化剂.Microbial transgl...
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...