The optimal economic working zone and economic curve were defined and compared with traditional internal combustion engine driving plunger pump.

定义了系统最佳经济性工作区域和最佳经济曲线，并与传统内燃机驱动柱塞泵系统进行比较。

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"Working in a field hospital outside of a nuclear,contaminated zone is a little different than working in a combat zone in Iraq or Afghanistan."

VOA: standard.2010.07.26

Despite the lighthearted approach, the risks of living and working in a combat zone are real.

WSJ: A Superheroic Caped Crusade to Keep Troops Safe in Afghanistan

Finance ministers from the euro zone are working Monday and Tuesday to find compromises that will make a deal possible by the time European Union leaders meet at the end of March.

WSJ: Odds Stacked Against Latest EU Pact

The European Central Bank has made two huge rounds of low cost 3-year loans available to European banks, and that seems to be working to assure that the euro zone financial system will be okay for several years.

FORBES: It Can Only Get Worse From Here For Stocks