Let's begin with a kind of warm-up sheet which we can anchor in these little drawings I've made.

让我们先来热一下身,看一下我在黑板上画的图。

耶鲁公开课 - 文学理论导论课程节选

Moving forward, we'll actually move some place other than the dining halls but we thought this is a nice way to start the term in a more casual communal environment.

注意前面，看黑板，把心思收回来,虽然开学之初,大家心思涣散，这无可厚非。

哈佛公开课 - 计算机科学课程节选

If you watch me do the thing on the blackboard, it looks very reasonable.

如果你只看我在黑板上的推导,觉得很有道理

耶鲁公开课 - 基础物理课程节选

There was lot of work it seemed at the board.

从黑板上看似乎需要做大量工作。

哈佛公开课 - 计算机科学课程节选