METHODS: The target compound was prepared by the bromination and amination reaction.方法: 用溴代及胺化反应合成了四甲基吡嗪衍生物.The effects of triacetoneamine concentration on hydrogenation and amination were discussed.论述了三丙酮胺纯度对加氢和还原胺化反应的影...
宇宙旅行家不得不在火箭中忍受许多不舒适的东西Travellers in space have to endure many discomforts in their rockets.带着最大限度的舒适和轻松结束了这一旅程,很少有什么不舒适.The journey was accomplished with a maximum of comfort and ease and a minimum of discomfort.伤口并不严重, ...
Ronald: I'm in a lot of pain. I have a toothache.罗讷德: 我很痛苦, 我的牙很痛.P : The forehead. Sometimes I also have a toothache.前额部. 有时牙齿也疼.You always ( have ) a toothache ( brcause ) you ( eat ) too ( much ) spicy food.你总是牙疼...
战斗在傍晚时分打响,持续了一夜。The fighting began in the late afternoon and continued all night.直到昨天傍晚6点40分,马丁微弱的呼救声才被人听到。Martin's weak cries for help went unheard until 6.40pm yesterday.除了偶尔一两个傍晚出来散步的人,雾蒙蒙的街上空荡荡的。The foggy street...
另一家讲究风水的企业是汇丰(HSBC).Another corporate exponent of feng shui is HSBC.莎士比亚还利用风水的漫画救济.Shakespeare also used geomancy for comic relief.对风水的了解也多了,尽管我只相信其中的某些方面.I now know more about geomantic omen though I still only believe ...