So, for example, if we're to hold the time constant, this makes it a lot simpler of an equation, because what we can end up doing is actually crossing out this whole term here.

比如说，如果我们把时间,定为常数，这使得方程,大大简化，因为我们可以把,这一项划掉。

麻省理工公开课 - 化学原理课程节选

The "I have" pattern is very simple but it's great. Because you can use it to show so many things.

I have”句型非常简单但却非常好用。你可以用它来表示大大小小各种情况。

I have 课堂 - SpeakingMax英语口语达人

So now we have that energy is equal to the negative of the Rydberg constant divided by n squared.

我们可以把能量方程大大简化,现在能量等于负的Rydberg常数除以n平方。

麻省理工公开课 - 化学原理课程节选