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. Water soluble hydroxypropyl � � cyclodextrin was converted to acetonyl hydroxypropyl � � cyclodextrin via selective oxidation.
我之所以得到提拔是由于立下了所谓的英勇卓越的功勋。I had been promoted for what was called gallant and meritorious service.奖章上刻有“功勋卓越”的字样。The medal bears the inscription "For distinguished service".我有幸与一些卓越的主管人员共事。I have had the good fortune to w...
He defied his opponents.他公然反抗他的对手们.The vastness of space defied comprehension.外层空间的茫茫无垠让人无法弄清其究竟.The beauty of the scenery defied all description.景色之美难以形容....