一组镜片 meaning in English

lens

A set of lens is installed at the hole in the middle , so that light behind your hand gets deflected along another path before coming towards your eyes
展品中间的孔使用了一组镜片，让你手掌背后的光线可以绕过掌边，到达你的眼睛。
Normally , light cannot penetrate opaque objects , including your hands . a set of lens is installed at the hole in the middle , so that light behind your hand gets deflected along another path before coming towards your eyes
在普通的情况下，光线是不能穿越不透明的物体，包括你的手掌在内。展品中间的孔使用了一组镜片，让你手掌背后的光线可以绕过掌边，到达你的眼睛。