The national weather authority has issued a yellow-alert warning.

国家气象管理局已发出黄色警告。

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On October 11, the FBI issued an alert warning of possible terrorist attacks on American soil or against U.S. international interests.

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Habituation occurs when people become accustomed to simply pressing the "yes" button when faced with an alert or warning.

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With Europe under an unprecedented terror alert, the U.S. State Department has issued a travel alert, warning of potential terrorist attacks.

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