“请原谅我礼数不周，”她平静地说。“我忘了自我介绍了。”"Forgive my manners," she said calmly. "I neglected to introduce myself."他直截了当且礼数周全，但是态度冷淡。He is direct and courteous but distant.在古代礼数是十分森严的,稍有僭越就会有杀身之祸.All that the soldiers in ancient times...
A method of synthesis of butyl isobutyrate catalyzed by amidosulphonic acid has been studied.以氨磺酸为催化剂催化合成了异丁酸丁酯,确定了酯化优化条件.The method about synthesis of approximate straight line motion mechanism based on moving centrode ...
Case study method first originals from the 19 th century.案例研究方法最初起源于19世纪系统使用的个案研究.At a concrete case study for the detail use is given.本文还结合实例予以具体应用.A case study approach has been employed for this research.这个研究采用了案例研究的方...