如果演示的地点不具备足够的防光性，请选择深色背景，并为文本使用任何浅色。

If the venue of your presentation is not adequately light-proof, select a dark-colored background and use any light color for text.

youdao

即使是当作为演示的母鸡对某种特定的食物表现出明显的厌恶，比如使劲摇头和擦拭嘴，也没有证据表明它们随后会避免食用这种食物。

Even when demonstrator hens reacted with obvious disgust to a specific food, via vigorous head shaking and bill wiping, there was no evidence that observers subsequently avoided eating that food.

youdao

传统的教学方法构成了这门课程的基础，而非常安静的学生们则记录下课堂上的要点和演示的例子。

Traditional ways of teaching form the basis of the lesson and the remarkably quiet classes take their own notes of the points made and the examples demonstrated.

youdao

You'll recall that at the very end of class we pulled up this little demo that looked like this.

你们可以回忆一下，我们曾,有个这样的演示。

哈佛公开课 - 计算机科学课程节选

So I realize that this was among a more childish demonstrations that I could come up with to illustrate this point.

我意识到这个一个很幼稚的演示,我可以举例来说明这一点。

哈佛公开课 - 计算机科学课程节选

I think it's a good idea to take the lab, particularly in this particular class because I don't have any demonstrations.

我觉得做实验还是很必要的,特别是在这门课上,因为我不会做任何演示

耶鲁公开课 - 基础物理课程节选