O George, do you remember Michael suddenly said to me, "How did you get to know me, mother?"

噢，乔治，你还记得吗，迈克尔突然对我说：“妈妈，你是怎么认得我的？”

youdao

Do you remember how he said to me yesterday, when I spoke to him of Cosette, soon, soon?

我昨天和他谈到珂赛特时，他向我说：‘快来了，快来了。’您还记得他是怎样对我说的吗？

youdao

Do you remember me? How we used to be?

你还记得我吗？还有我们曾经的过去？

youdao

So let's do a quick clicker question, and you tell me how many valence electrons does fluorine have? Remember, valence electrons are different from core, they're only the outer-most electrons in the outer-most shell.

那么让我们来做一个小选择题，请大家来告诉我,氟有多少个价电子，要记得，价电子与芯电子不同，它们是在最外壳层的最靠外面的电子。

麻省理工公开课 - 化学原理课程节选