11-04-28 Researchers at Northwestern University have created a new kind of cloaking material that can render objects invisible in the terahertz（兆赫） range. Though this design can't translate into an invisibility cloak for the visible spectrum, it could ha...

11-04-18 As Xi Ren, the leading service girl who had taken care of Baoyu was away to visit her home, the duties, and the charge of Yihongyuan Court, fell on Qing Wen. A girl anxious to excel in（胜过，擅长） everything, Qing Wen did everything personally. Fo...

10-03-27 German scientists have created a three-dimensional invisibility cloak that can hide objects by bending light waves. 德国科学家近日研制出一种通过弯曲光线来隐藏物体的三维隐形斗篷。 An image of invisibility cloak in Harry Potter. German scientists have...