很多环戊烷的衍生物在这个范围也出现吸收.Many cyclopentane derivatives also absorb in this region.后者是由二氧杂环戊烷中活化较弱的C -H 键离解而产生的.The latter arises from abstraction of the somewhat lesser activated C - H bond in the dioxolane.控制缩合反应的温度,还得到一种苯并环...
They peeled cold stiffened gloves from their hands.他们将冻得硬邦邦的手套从手上脱下来。Russian resistance suddenly stiffened because there was no room for retreat...俄罗斯的反抗突然变得强硬起来，因为已经没有退路了。This special paper was actually thin, soft Sugiw...
圭亚那国防军正采取行动驱逐在本国作业的非法巴西矿工。The Guyana Defence Force is engaged in flushing out illegal Brazilian miners operating in the country.可是, 英属圭亚那仍然极不稳定.British Guiana, however, was a marginal problem.与法国本土相同法属圭亚那的货币是欧元.France an...
He can speak several dialects.他会说好几种方言.Modern English derives primarily from one of the dialects of Anglo - Saxon.现代英语起源于盎格鲁 - 撒克逊语的多种方言之一.Dialects occur in birdsong as well as in speech.语言有各种方言,鸟类的歌唱也有各种地方调....