As a stranger entered a little country store, he noticed a sign warning, "Danger! Beware of dog!" posted on the glass door.

一名陌生人走进一家乡间小商店，看到玻璃门上帖着的一个告示牌上写着，“危险！小心有狗！”

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Scaffolding was erected to bar entry into the nave, and signs were posted warning of danger overhead.

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It was simply safer, from the point of view of survival, to hear rustling in the grass as a warning of danger.

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That is higher than normal but still well below the level that triggers a danger warning.

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