The team ? sir john pendry of imperial college london with david schurig and david smith of duke university in north carolina ? used the equations to devise a way to cloak an object with a material that would deflect the rays that would have struck it , guide them around it and return them to their original trajectory 这个小组由伦敦皇家学院的约翰?彭德莱爵士及北卡罗莱纳州杜克大学的戴维?舒里格和戴维?史密斯组成运用这些方程，创造出一种方法：在物体表面覆盖一层物质，使投射其上的光线发生偏转，并引导光线绕过物体，重返最初的轨道。
There were two main roles of the imperial college of tang dynasty in the sino - foreign cultural and educational export : to enroll and cultivate overseas students by spreading confucianism and its culture , induding a whole set of rules derived from confucianism and knowledge related to calligraphy , mathmatics , music and literatare ; and to participate in important national foreign activities to spread and export confucianism by means of deferring confucius 摘要唐代国子监在当时对外文化教育方面的作用主要体现在两个方面：第一，招收和培养留学生，主要承担着儒家思想和文化的传播与输出工作，包括在儒家思想和文化之下衍生出来的一整套完整的制度，以及有关书法、数学、音乐、文字学等方面的具体知识；第二，参与主持国家重大的外事活动，通过对圣贤的景仰传播与输出以儒家礼仪制度为代表的儒家文化和思想。
