METHODS: The target compound was synthesized from N - benzyl protected aminoacetophenone through hydrogenation, benzoylation and reduction.方法: 以氮 - 苄基保护胺基酮为原料,经氢化, 苯甲酰化,还原三步合成双苯甲酰沙丁胺醇酯....
两个小伙子正在松散的砾石路面上赛摩托车。Two young men were racing motorcycles on the loose gravel.他们在推选的首领的领导下,组成了松散的互助联盟.They formed loose leagues of mutual help under chosen leaders.松散的沉积物可以变成坚硬的沉积岩.Loose sediments may be changed into sol...
Despite repeated assurances to the contrary, Pakistan has not ended its nuclear programme.尽管巴基斯坦再三保证停止其核项目，但事实却并非如此。Skill is acquired through repeated practice,and practice makes perfect.久练为熟,熟能生巧。I repeated them until I...
这将是我们参加过的最盛大的感恩节晚餐。It's going to be the most magnificent Thanksgiving dinner we ever had.全家人都来参加了这次盛大的家庭聚会。The whole family was there for this big family reunion.我们下周组织一次盛大的晚会吧。Let's plan a big night next week....