Today's globally networked media and communication system has its origins in the 19th century, when, for the first time, messages were sent electronically across great distances.

现代的全球网络媒体和通信系统起源于19世纪，当时信息第一次以电子方式远距离传送。

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For the most reliable results, the system should be idle when you run this command.

为了获得最可靠的结果，在你运行这个命令时，系统应该是空闲的。

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But the need for change management doesn't really stop when you're done building the system.

但是，当你在构建一个系统时，对于变更管理的需求是不应该停止的。

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Their central nervous system may tell the brain that there is pain even when there is no cause for the pain.

VOA: special.2011.07.26

These are physical knobs that are available us as experimentalists. And so when we turn these knobs on our system, we want to know how the enthalpy is changing for that system.

这些都是我们做实验可,以得到的物理变量,所以当我们在系统中,改变这些量的时候。

麻省理工公开课 - 热力学与动力学课程节选

The quotas were issued for free when the system started--on the basis of a company's previous catches and its time in the industry--and now form the foundation of Port Lincoln's vast wealth.

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When positions and exposures cannot be determined rapidly--as was the case, for example, when program trades overwhelmed the system during the 1987 stock market crash--potential outcomes include highly risk-averse behavior by market participants, sharp declines in market liquidity, and high volatility in asset prices.

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At the beginning of the crisis, for government not to intervene when the financial system was on the verge of meltdown, and we were shedding hundreds of thousands of jobs a month, and the credit markets had just frozen completely -- for us not to intervene in that situation would have been simply irresponsible -- would have been irresponsible.

WHITEHOUSE: President Obama Talks with Virginia Families on the Economy | The White House