During this time, he discovered things he wanted to change in the book.

VOA: special.2009.03.15

It means that the properties of the system, the properties that describe the system, don't change in time or in space.

它的意思是指，用以描述系统的性质，不随时间或空间改变。

麻省理工公开课 - 热力学与动力学课程节选

But luckily for us, there's a classical equation of motion that will, in fact, describe how the electron and nucleus change position or change their radius as a function of time.

但幸运的是，有一个,经典方程描述了电子和核子,位置或者它们直接的距离是,如何随时间变化的。

麻省理工公开课 - 化学原理课程节选

The idea that species change was not new even in Darwin's time.

VOA: special.2009.12.01

Philosophers and psychologists knew for a long time that getting smacked in the head could change your mental faculties; that diseases like syphilis could make you deranged; that chemicals like caffeine and alcohol can affect how you think.

哲学家和心理学家在很久以前便知道,头部受到重创,会改变你的心理官能,像梅毒这样的疾病可以让你精神错乱,像咖啡因和酒精这样的化学药品,可以影响到你的思维

耶鲁公开课 - 心理学导论课程节选

What we're trying to do here is to change the system in the United States from one that is based on the time that is spent in the seat to one that is based on your actual accomplishments."

VOA: special.2010.02.25

And so, if you rewind the tape and play it again over and over and over again, each time you set things up the very same way they must move or transform or change or end up in the very same state.

所以,如果你将一盘磁带,反反复复地播放,每次你播放的内容,从头到尾的起承转合一定是,绝对一致的

耶鲁公开课 - 死亡课程节选

"It's a big deal. How big a deal you have to measure piece by piece but clearly it is the first major change in our health care system since nineteen sixty-five so that's a long time coming."

VOA: special.2010.03.27

What this really means is in a given time, the change in this quantity is a times the change in this quantity.

这里的真正含义是在给定的一段时间内,这个量的变化量等于,a乘以这个量的变化量

耶鲁公开课 - 基础物理课程节选

Grybauskaite told journalists Sunday that the economic tensions show it is time for change in the country.

VOA: standard.2009.05.17

Senator Kerry said the time had come for a change in U.S.strategy toward Pakistan, with the aim of appealing to the hearts and minds of the Pakistani people.

VOA: standard.2009.05.04

But in an economy that has lost jobs for 23 consecutive months, Hall noted that long-term unemployed continued to grow, rising by 293,000 to 5.9 million, with little change in the number of Americans employed part-time but seeking full-time work.

VOA: standard.2009.12.05