Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.手性唑硼烷酮能够催化不对称1, 3偶极加成反应并取得很好的效果.The cycloaddition itself is the slow step.环化作用本身是慢的一步....
她不断倾泄对于母亲憎恨她的联想.C . continued an outpouring of associations to her mother's hatred of her.虾群缓缓爬上大石头, 虾虎鱼则是游过倾泄而下的水层.The shrimp simply crawl up the boulders, while the fish swim through films of cascading water.时雨滂沱自...
I think they saw it as a natural progression for me.我想他们认为这对我来说是顺理成章的。Both drugs slow the progression of HIV, but neither cures the disease.这两种药物都可以延缓艾滋病病情发展，但是都不能治愈这种疾病。I believe in progression, in taking risks, in neve...
但是人是一种不再知道即刻的存在.But man is a being who no longer knows the immediate.这个方案不太可能产生即刻的影响.The scheme's immediate impact is likely to be minimal.我还意识到,即刻的满足并不能给我带来什么.I also realized that immediate satisfaction wasn't...