A muffin serving size is the size of a light bulb.

一份松饼是灯泡这么大

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You don't need a light switch or a light bulb or an iPhone app to turn something on or off.

你不需要一个电灯开关,或者一个电管,或者打开关闭一个iPhone应用程序。

哈佛公开课 - 计算机科学课程节选

Certainly if you buy them out somewhere you're going to get one that's maybe the size of a light bulb, but it's like the flood light in your backyard or something, it's a huge light.

当然,你在外购买时,倒是有可能买到灯泡大小的,不过是你家后院强光灯大小的灯泡,巨大的灯泡

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

OK. In the length of time it takes for the light to get from that bulb to the table, this machine processes two operations.

好，在灯光从灯泡到,桌子的这段时间内，电脑已经进行了两次运算了。

麻省理工公开课 - 计算机科学及编程导论课程节选