a large board with a smooth dark surface that is written on with chalk in schools
黑板
a smooth, typically dark-colored surface, usually made of slate or a similar material, used for writing or drawing with chalk
黑板
a large board with a smooth white surface that we can write on, especially used for teaching or presentations
白板
a large display board that can be connected to a computer or projector, allowing users to interact with digital content using touch, stylus, or other input devices
互动白板
a display board used for posting notices, announcements, or other informational materials
布告栏
furniture we use for working, writing, reading, etc. that normally has a flat surface and drawers
桌子
a small closet that usually has a lock, in which valuable items and belongings could be stored
储物柜
a device used for making images or videos appear on a screen, wall, or other flat surfaces
投影仪
a surface, often white or gray, used to display images from a projector
投影幕布
a device that projects images or text from a transparency onto a screen or wall
投影仪
a mechanical or electronic device used to signal the start and end of classes or periods in a school day
学校钟声