The carbon is electrophilic centre.碳是亲电的中心.It will become deepen to the students'recognization in mechanism of Aryl electrophilic substitution.这些问题的讨论将深化学生对芳烃亲电取代反应机理的认识.The rate constants of radical and electrophil...
The results and offer useful data for studying pharmacology and medicine effects of arillus longan.为研究龙眼肉的药理、药效提供了有用的数据.Longan and the most suitable costumes fresh, lychee and other products.最适合盛装鲜桂圆, 荔枝等产品.Longan trees ...
He had written the note from memory, word perfect, and spelled atrociously.他凭着记忆作了记录，用词恰当但拼写错误百出。He had to have everything spelled out twice over for him.他不得不把所有事项都对他详细说明了两次。It looks like it's spelled wrong.看起来像是拼错了...
Jimmy Durante's buffoonery was hilarious.吉米·杜兰特的滑稽表演令人捧腹.It can take innumerable forms, from buffoonery to the pursuit of posthumous fame.它可以有无数表现形式, 从插科打挥到追求死后的名声....the music hall buffoonery of Norman Wisdom.充满诺曼人...