It's always Milton's duty - this is the reason that he was put on this earth: to liberate a people from any such constraining customs.

弥尔顿的使命是,-他是为此才诞于世上：,将英格兰民族从所有抑制人的传统中解放出来。

耶鲁公开课 - 弥尔顿课程节选

And this is a very fast speed, of course, it's about 700 million miles per hour. So, one way to put that in perspective is to think about how long it takes for a light beam to get from earth to the moon. Does anyone have any guesses? Eight seconds, that sounds good.

当然这是一个非常快的速度，它大约是每小时7亿英里,为了更形象化，我们,看看光从地球到月球,需要多少时间，你们猜猜是多少？,8秒，猜的不错。

麻省理工公开课 - 化学原理课程节选