This preparation uses dialkyl imidazole salt, alkyl pyridine salt or caprolactam and fatty acid as reactant.该方法使用带有二烷基咪唑盐 、 烷基吡啶盐或者己内酰胺和脂肪酸作为反应物.Thus the term dialkyl carbonate includes, for example, methyl ethyl carbona...
The evening show was terrible, with hesitant unsure performances from all.晚上的演出很糟，所有人都缩手缩脚，显得很不自信。It was so humiliating, a terrible blow to my self-esteem.这件事如此丢脸，深深地挫伤了我的自尊心。I had a terrible head and was extraordinarily...
Thus, the portfolio of indexation fund should be guided by passive in stead of active investment.因此, 指数型基金投资组合的构建应坚持被动投资,力避主动投资.It's a sad truth that children are the biggest victims of passive smoking.不幸的事实是，儿童是被动吸...
发电机出了故障，所以停电了。The dynamo conked out so we've got no electricity.他们有一台发电机，以备停电时所需。They have a generator when the electricity fails.工厂应急发电机在停电期间用上了。The factory's emergency generators were used during the power cu...