One of the beads was pinned to a glass surface so that as it spun the other rotated around it.
其中一个珠子用针固定在玻璃表面,它转动的时候另一颗珠子就会围绕着它旋转。
2
They use a metal board spun-coated with e-ink instead of a glass sheet for the screen, which will definitely prevent the heartbreak of shattered ereaders for the next generation of readers.