And once lead gets into the soil, it stays a long time.

VOA: special.2009.06.09

You can't just say it once. You have to try to fill that void by saying it two times and by invoking his father a third time.

你不能只讲一次，你必须说第二遍,并且第三次提到迪安的父亲，来填补中间的空隙。

耶鲁公开课 - 1945年后的美国小说课程节选

So it'll be a time once or twice a week where they will be in their office.

所以，他们大概每周有一两次会在办公室里。

与教授的面谈 - SpeakingMax英语口语达人

Once upon a time there was a fearsome ogre whose roar terrorized the magical land of Far Far Away.

VOA: standard.2010.05.27

Never go back. Find another. Leave at once. Go for a long trip again, but this time we'll go wherever I want, won't we?" I nodded. My Lolita.

绝不会去，另找一所学校，马上走，再去长途旅行，不过这次去我想去的地方，好吗？“我点头，我的洛丽塔。

耶鲁公开课 - 1945年后的美国小说课程节选

That's why your operating systems and your personal computers often crash for no apparent reason. Just because two things happen to, once in a while, occur at the same time.

这就是为什么你的电脑或者操作系统,经常会毫无预兆的崩溃了,这是因为两件事情正好同时发生了，通常还有人工输入。

麻省理工公开课 - 计算机科学及编程导论课程节选

Once the poleis are in place, they will spend a great deal of time fighting each other.

一旦城邦在某地建立,他们就会花上很长一段时间相互争斗

耶鲁公开课 - 古希腊历史简介课程节选

So once again, no abstentions this time: who would choose Alpha? Let's have a show of hands again, keep your hands up a second.

这次也不允许弃权,谁会选择α,请举下手,先别放下手

耶鲁公开课 - 博弈论课程节选

First of all, it will only be a minute or two at a time, maybe once or twice a lecture.

首先，每次只有一两分钟，一堂课最多不超过两次。

哈佛公开课 - 幸福课课程节选

That's where I--once that gets going, it goes for a long period of time.

一旦开始了,就喋喋不休

耶鲁公开课 - 聆听音乐课程节选

And once upon a time they actually were thinking about knocking it down

从前，人们也想过要拆毁它，

中央车站的历史 - SpeakingMax英语口语达人

I've got a list, walk you through it an element at a time, do I look at each element of the list more than once?

你一次只能得到他的一个元素,我是不是把数组里面的每个元素，都过了大于等于一次？,你不这样认为么？大家有什么建议？

麻省理工公开课 - 计算机科学及编程导论课程节选

So rather than go through this again a whole third time, I've gone through it once in quantities and once in prices, I'm going to get you guys to do it this time by having you do it on a homework assignment.

与其从头到尾再做第三遍,我已经从产量和价格角度从头到尾做过了,我将让你们自己,在家庭作业中完成这个工作

耶鲁公开课 - 博弈论课程节选

So this design of having students on campus once a month for intensive classes allows students to continue working full time.

让学生每月来校一次,进行现场教学的设计,允许学生继续全职工作。

哈佛公开课 - 幸福课课程节选

bugs And if so, let's fix them all at once rather than one at a time.

让我们一次性全部修复这些,而不是一次修复一个。

麻省理工公开课 - 计算机科学及编程导论课程节选