This turns Twitter intoan early-warning system (like a canary in a coalmine) for spotting negativebuzz and heading it off before it doesreal damage toyour bottom line.

这样可让Twitter变成一种预警机制 （有点象煤矿里的金丝雀），用于发现消极的发言，并在这些发言伤害到你的底线之前化解掉。

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Since the Arctic as a whole is responding to climate change earlier and more acutely than the rest of the planet, we should think of it as an early warning system -- a proverbial canary in a coalmine.

CNN: Next global warming worry: Thawing tundra

Serving as a psychological canary in the coalmine of your life, warning you to re-evaluate the wisdom inherent in following one particular path relative to alternative ones.

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