My 4-year-old daughter Lucy missed her a lot and asked if we could write a letter to God to make sure he could look after Abbey well.

我四岁的女儿露西非常想念她，她问我们是否可以给上帝写封信，以确保他能照顾好艾比。

youdao

A retrospective 4 is a facilitated meeting where four questions are asked: What did we do well that, if we don't discuss, we might forget?

回顾4是一个简化的会议，在会议上要问四个问题：我们什么做得好，如果我们不讨论，可能会忘记？

youdao

So we called them again and asked for the address, which was 4 kilometer away.

我们只好打电话到旅店去，重新问了地址，大约在4公里之外的地方。

youdao

So the key word here is that we asked you to identify the third excited state. So, what white is n equal 4 Ok to for the third excited state? 4 OK.

这里的关键的地方是我,要你们找到第三激发态,第三激发态的n等于多少？

麻省理工公开课 - 化学原理课程节选