chalkboard是什么意思 n. 黑板 n sheet of slate; for writing with chalk chalkboard的用法和例句: 1. It's like nails on a chalkboard, but then the chalkboard is beating me over the head. 就好像用手指甲在黑板上划过 然后再用黑板猛砸我的头 2. I've been standing...