Emergency Fuel Shut Off Valve.

燃油紧急关闭阀门。

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Close shutoff valve No. 2 then shut off valve No. 1 on test assembly.

关闭2号关闭阀，然后关闭测试总成上的1号阀门。

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Oxygen flows through the pressure reducing regulator and shut off valve to the masks.

氧气通过减压调节器和关断活门流向氧气面罩。

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Safe to say that the Department of Defense does not have a submersible with arms to shut off the valve of a deep-water oil well.

WHITEHOUSE: Aboard Air Force One En Route Andrews Air Force Base

That starts off with a "junk shot, " in which material such as rubber tires and golf balls is pumped into the shut-off valve, or blowout preventer, that sits atop the well.

WSJ: Spill Fight Shows Progress

Among other response activities are on-water skimming, subsurface wellhead operations, continued efforts to see if they can get that shut-off valve to close, and significant booming efforts underway to protect vital shoreline.

WHITEHOUSE: Press Briefing on Oil Spill in Gulf of Mexico