But this commencement was especially hopeful - because of just how much the kids at Booker T. Washington High School had overcome.

但这场毕业典礼却尤其充满了希望——因为这是布克·华盛顿高中的同学们克服了那么多的困难才赢得的！

youdao

Now,he thinks short is better. "I've gotten researchers telling me that you don't realize is how long someone can have a high level of concentration.

VOA: standard.2010.03.26

We don't know the time and we don't know how high it's rising so you can ask, "How am I supposed to deal with this problem?"

我们既不知道时间,又不知道最高点的高度,那你就会问了,这道题该怎么做呢

耶鲁公开课 - 基础物理课程节选

Most of us don't know enough to know with a high degree of accuracy how things would have gone had I decided to become a farmer instead of a philosopher.

多数人了解得都不够,无法更确切地知道,如果我成为农夫而非哲学家,到底会有怎样的人生。

耶鲁公开课 - 死亡课程节选

"I don't know how high it is going to get but I know 200 of my constituents are flooded out and I am very concerned about the long-term effects of structural damage, " he said.

BBC: Britain endures the deluge

Don't just ask how high speed your Internet access is.

CNN: OPINION: The push is on to deploy high-speed, always-on residential Internet access

It isn't clear how long these high yields will last.

WSJ: Morgan Stanley Fund Plays Russian Retail