The trends related to movies are less disturbing compared with the change in how teens spend their time.

与青少年如何花时间的变化相比，与电影相关的趋势没有那么令人不安。

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Some digging around in historical records revealed that there was a change in the incidence of water-borne disease at that time, especially dysentery.

一些历史记录显示，当时水源性疾病的发病率发生了变化，尤其是痢疾。

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Some are so pressed for time that they change clothes in the taxi.

有些人时间紧迫，他们在出租车里换了衣服。

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These incidents took place during a time of intense social and political change in the United States.

VOA: special.2010.02.25

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

Drivers just need to enable a single setting in the app and then plug their cars in without worrying about what time the rates change in their area.

ENGADGET: Ford teams up with Eaton, Whirlpool and SunPower to create MyEnergi Lifestyle, hopes to reduce everyone's CO2 footprint

In this new time of change, pessimism was back in fashion.

ECONOMIST: Amalia Rodrigues

After only seven months, with my Tonight Show in its infancy, NBC has decided to react to their terrible difficulties in prime-time by making a change in their long-established late night schedule.

FORBES: It's Official: Conan Won't Do Tonight Show At 12:05 A.M.