A thick screen had been placedbetween his cathode emitter and the radiated cardboard, proving that particlesof light were passing through solid objects.
当时，他在阴极发射器与被辐射的纸板之间放置了一道厚厚的屏障，说明光的粒子穿过了固态物体。
2
Its screen is a liquid-crystal display, rather than an energy-guzzling glass cathode-ray tube — an exception to the rule that the components used are old-fashioned, and therefore cheap.