That in turn is related to halloo, a cry to urge on hunting dogs.

而hallo则又与halloo有 联系, Halloo乃指敦促猎狗时的叫声,其历史又可上溯至1700年.

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Do not halloo till you are out of the wood.

未走出森林之前先别欢呼.

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Do not halloo until you are out of the woods.

(谚)未出险境,先别高兴.

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Don't halloo till you are out of the wood.

未走出森林前别欢呼,别高兴得太早.

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Don't halloo [ cry ] till you are out of the wood.

未出险境别先欢呼.

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