The whole country is in a state of alert.

全国正处于戒备状态。

youdao

Meanwhile Britain remains at its highest state of alert.

然而英国仍然保持最高警戒状态。

youdao

This is like a soldier in the battlefield, always the same need to maintain a high state of alert.

这就好比一个战士处于战场中，时刻需要保持高度戒备状态一样。

youdao

The border forces once were and may now still be at the highest state of alert.

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And this is obviously a cause for concern and requires a heightened state of alert.

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South Korea has put its armed forces on a high state of alert.

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