"Biologically, fight-or-flight behavior has two distinct stages, " the researchers wrote. "The short-term response [is] a surge in adrenaline production.

研究人员写道，“短期的回应[是]肾上腺激增。

youdao

youdao

Think of each of these as a trigger: an event, a behavior, or a circumstance that prompts negative emotions - and more specifically, the experience of fight or flight.

这些事件，行为或情形都会引发负面情绪，更明确的说，一种“战还是逃”的经历。

youdao

The company has to conduct battery- and insulation-related pre-flight inspections, watch battery behavior like a hawk, use only its own pilots and fly over unpopulated areas.

ENGADGET

Indeed, market behavior has been like a flight to quality.

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In future updates to delta.com, customers will see additional service improvements which will include more robust customer alerts, improvements to flight search results, enhanced information displays and greater personalization based on their past travel behavior.

ENGADGET: Delta introduces Fly Delta app for iPad, iOS 6 Passbook integration