We use the whiteboards alongside one of the walls, where you just write down your name if you have a question.

用其中一面墙壁旁边的白色书写板，如果有问题，你只要在那里写下你的名字。

哈佛公开课 - 计算机科学课程节选

PROFESSOR: -- that this is not a quick clicker question, so you actually need to maybe write something down to figure out the answer.

教授：这个问题不是一眼就能看出来的，你们需要在纸上写一写,才能得到答案。

麻省理工公开课 - 化学原理课程节选