上周五有多少人没有出席会议？

How many people were absent from the meeting last Friday?

youdao

你们周五有体育课吗？

Do you have a PE lesson on Friday?

youdao

星期五有雪。

It's snowy on Friday.

youdao

This time, you're a transplant surgeon and you have five patients, each in desperate need of an organ transplant in order to survive.

这次你是一名器官移植医生，你有五名病人，每名病人都急需器官移植才能存活。

耶鲁公开课 - 公正课程节选

So in our first structure, we would find for the nitrogen we have a formal charge 5 minus 4 minus 2, because we're starting with 5 valence electrons, so that is a formal charge of minus 1.

那么在我们的第一个结构中，我们发现氮的形式电荷量是五减去四4,再减去二，因为我们开始有五个价电子，因此它的形式电荷量是负一。

麻省理工公开课 - 化学原理课程节选

There's going to be, I don't know, four or five questions.

将有，我不知道，大概四到五道题。

麻省理工公开课 - 固态化学导论课程节选