For example, fear can alert us to possible danger.

例如，恐惧可以提醒我们可能存在的危险。

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Jealousy and anger, for example, may have evolved to alert us to important inequalities.

例如,嫉妒和愤怒可以演变为警醒,让我们察觉出极其不平等的现象。

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We tune out signals that should alert us to be on guard and on our feet, at home and at work.

无论在家还是在公司，我们都需要对各种信号保持警惕。

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"It's physiological and it's emotional." "Physiologically,we have a tendency when we come into a situation that seems dangerous we get a lot of chemicals flowing through our bodies to help us stay alert, to be able to act if we need to act.

VOA: standard.2010.07.01

Either way, don't count on the analysts to alert us to problems ahead.

FORBES: Analyze This

Maybe the barking dog really was trying to alert us to budding economic troubles before it was summarily dispatched to the pound.

CNN: Still On A Roll?

Mr Jones, director general of the Welsh government's sustainable futures department said that "we didn't have the triggers to alert us to the problems".

BBC: Magor Marsh. Pic: Rob Waller