Mr Perczel came up with the idea under the guidance of Professor Ulf Leonhardt.
派采尔正是在里奥·哈茨教授的指导下提出了他的构想。
2
So Leonhardt and Pendry imagined bending space to steer light around a circular region, making anything inside that hole invisible.
因此，莱昂·哈特和彭迪设想，通过弯曲空间来引导光绕过圆环，从而使位于圆环中的所有东西都隐身。
3
"The Influence Index doesn't merely measure who's talking on Twitter, but it also measures how much someone is affecting the conversation," wrote Leonhardt.