She's an insomniac; she only sleeps for two or three hours a night.她患失眠症, 每晚只睡两三个小时.The insomniac is habitually afflicted with wakefulness at times when he wishes to sleep.失眠症患者,这种病人在他想睡觉时经常特别清醒....
Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts.大多数连于芳核能被直接取代的基团仅限于重氮盐.Severe steric effects at the reactive carbon would impede the substitution.大的立体效应阻止在碳上的取代.We use saccha...
Sushi's trend of renouncing the world had deeply influenced his ci poetry works.苏轼的出世倾向对其词作产生了深刻的影响.Sushi's trend of renouncing the world was deeply influenced to a great degree by Tao Yuanming.苏轼的出世倾向很大程度上受到陶渊...