Blackboard

(noun.) sheet of slate; for writing with chalk.

塞西莉亚校对

• But why one should go out to dine with one's own daughter or sister, as if one's under-petticoat was a blackboard, I do NOT understand. 查尔斯·狄更斯. 我们共同的朋友.
• The senses--especially the eye and ear--have to be employed to take in what the book, the map, the blackboard, and the teacher say. 约翰·杜威. 民主与教育.
• I hurriedly copied it, and he sent it, requesting the agents to display it on the blackboards used for stating the arrival and departure of trains. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

校对:诺艾尔