He wanted to alert people to the activities of the group.

他想警告人们注意这个组织的行动。

《柯林斯英汉双解大词典》

Specifically, Helt said, it could diffuse stress after a period of being on high alert and spread a feeling of calm through a group.

特别是它可以在经历一段高度紧张的阶段后，分散压力，在群体里传播平静的感觉。

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"I can believe these findings," says Brit Beemer, founder and CEO of America's Research Group. "When you a shop, for example, you are more alert, and that's a benefit."

我相信这些研究结果，比如你在购物的时候，意识上会更会警惕些，这就是一个好处“，美国一家调查公司的创立人兼首席执行官Brit Beemer这样说道。”

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International Alert, a London-based peace research group, tried the same for Sierra Leone in the mid-1990s.

ECONOMIST: Sins of the secular missionaries | The

At the centre of the group was a blind boy, as alert and as slight as a gazelle.

BBC: Following the Silk Road to the end of China

The stranded group used a newly-installed bell on the island to alert people that they had been cut off.

BBC: Llyn Gwynant (library picture Andrew March)