It can take from twenty minutes to more than two hours for them all to leave.

VOA: special.2009.12.07

All your TA's have either already have their extra office hours, or there are some that will be going on tonight or tomorrow, so keep those in mind as your finishing up your studying for the exam.

你们的助教们有的已经做过额外的答疑，而有的会在今天晚上或者明天答疑，因此在你复习准备,考试的时候不要忘了这些。

麻省理工公开课 - 化学原理课程节选

I would have class maybe 8 to 9 hours like all in a row

我要连续上八至九小时的课，

耶鲁的忙碌生活 - SpeakingMax英语口语达人

Sequencing the genes, organizing all of them in order, will save many hours of searching.

VOA: special.2010.02.02

I have asked all of my recitation instructors to state office hours.

我已经叫所有背诵课的老师,安排办公时间了。

麻省理工公开课 - 固态化学导论课程节选

It reminded him of all the hours he had spent there at his wife's parties.

VOA: special.2010.05.29

I stress it in particular because I know you're all going to get into this stage; you've got a problem set due in a couple of hours, you're still writing the code, you don't want to waste time, and I'm going to use quotes on "waste time", doing those extra things to do the defensive programming, you just want to get the darn thing done.

我特别强调了这一点,因为我知道你们都会慢慢成为程序员;,你在写代码过程中造成了一系列的错误，你还在写代码，你不想浪费时间，我想把“浪费时间“用引号圈起来，浪费时间来做因为防卫性程序设计，而带来的这些额外的事情,你只想赶紧把程序写完，这不是一个好习惯，因为当你做完回头。

麻省理工公开课 - 计算机科学及编程导论课程节选

In seventy-seven hours, if all went well, Apollo Eleven would be there.

VOA: special.2009.07.15

We say that we have very very short lives, because after all right now I've got some memories that I didn't have 2 hours ago.

我们的人生非常短暂，我现在就有一些,我2小时前没有的记忆。

耶鲁公开课 - 死亡课程节选

They all need to be cooked in an oven for several hours.

VOA: special.2010.05.28

So, all professors hold office hours,

所有教授都有办公时间，

与教授的面谈 - SpeakingMax英语口语达人

They spent seventy-five hours, in all,on the surface.

VOA: special.2009.07.29

But just go to cs50.net, click office hours and you'll see the Google Calendar with all of the office hours that are still happening tonight, as well as tomorrow and these are just an opportunity to chat, to ask questions one on one with the teaching fellows or course assistants or frankly just a way to hang out during brain break and work on projects and then see what some of your friends might be tackling themselves.

但是我要提醒大家去cs50，net网站看看,这里清清楚楚告诉你,什么时候该学习工作，当然也包括今晚的明天的，我们还有一个机会供，一个与研究生助教或课程辅导员交流的机会,更直白来说,是提供你们开小差的机会,看看你们周围哪些人,在开小差呢。

哈佛公开课 - 计算机科学课程节选

It took several hours before security forces were able to gain control of all the sites.

VOA: standard.2009.10.15

Those nine hours are going to be primarily working on problem sets, and all the problems sets are going to involve programming in Python, which is the language we're going to be using this term Now, one of the things you're going to see is the first problem sets are pretty easy.

这九个小时会是问题,提出的基本锻炼，所有的问题提出,都将涵盖，我们这学期,将使用的Python语言的程序,现在，你们将要看见的,第一个问题的提出非常简单。

麻省理工公开课 - 计算机科学及编程导论课程节选

Speaking just hours before the start of the G20 meeting of major economies, Mr.Obama stressed the need for all participants to seek common ground.

VOA: standard.2009.04.01

"We are going to commit all our day hours today to help clean up so that at least whatever we can save, we can save,"

VOA: standard.2009.10.04

Everything goes all right, 2 men shrimping 10 hours, Less what you spends on gas...

VOA: standard.other