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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You can expect to pay the bank a fee of around 1% to 2% every time you change money.

每次兑换钱时，你要准备支付银行约1%至2%的费用。

《柯林斯英汉双解大词典》

The 1960s and early 1970s were a time of change and turbulence.

20世纪60年代和70年代初期是个变革和动荡的年代。

《柯林斯英汉双解大词典》

The Industrial Revolution of the eighteen and nineteen hundreds was a time of great change for the world.

VOA: special.2011.04.26

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

it's the study of how languages change over time.

它研究的是语言的历史变化。

我的专业 - SpeakingMax英语口语达人

Today the increment of time for market change is now faster than the increment of time for moving information up and down a chain of command.

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The Consumer Price Index (CPI) is a measure of the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services.

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Watch the Kickstarter pitch (below) for a detailed explanation of combat and other systems in the game, including its dynamic weather and time system which not only has day and night cycles, but entire calendar year cycles and a fully diagrammed sky full of celestial bodies that change over the course of time.

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