Most of them have a monochromatic screen to display text and black-and-white pictures, and none can handle video.

大多是单色屏幕，仅能显示文本与黑白图片，且全都无法处理视频。

youdao

Most of them have a monochromatic screen to display text and black-and-white pictures, and none can handle video.

大多是单色屏幕，仅能显示文本与黑白图片，且全都无法处理视频。

youdao