It was snowing hard by then.当时雪下得很大。After it had stopped snowing, we all went sledging.雪停了以后我们全去坐雪橇玩.Ordinarily It'should be snowing at this time of the year.按说这时候该下雪了....
Water soluble hydroxypropyl � � cyclodextrin was converted to acetonyl hydroxypropyl � � cyclodextrin via selective oxidation.通过选择性氧化,将水溶性优良的羟丙基β环糊精转化为丙酮基羟丙基β环糊精....
Remember, you can't bring into being what you can imagine.记住, 你可不能将想象出的结果变为现实.The clock's methodical ticking helped bring into being the scientific mind and the scientific man.钟表规则有序的滴答运行帮助产生了有条理的思维和有条理的人.He wi...