A bare surface is not covered or decorated with anything.
无遮盖的; 无装饰的 • They would have liked bare wooden floors throughout the house. 他们本想把整个房子都铺不加装饰的原木地板。
If you bare something, you uncover it and show it.
使露出 • Walsh bared his teeth in a grin. 沃尔什一笑露出了牙齿。