Once an oak tree becomes established, it is likely to survive minor cycles of drought and even fire.

一棵橡树一旦长成，就有可能在干旱甚至火灾的小周期中存活下来。

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That's only a small share of the total acreage that could benefit, about half a million acres in all, so it will be vital to prioritize areas at greatest risk of fire or drought.

这只是受益总面积的一小部分，共约50万英亩，所以优先考虑火灾或干旱风险最大的地区是至关重要的。

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Drought, fire, pathogenic fungi and introduced predators have put it in immediate danger of extinction.

干旱、火灾、毒蘑菇以及捕食者的引入使得黄腿山蛙处于灭绝的危险境地。

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The Douglas fir, which produces more seeds than the Ponderosa pine but is much less tolerant of drought or fire, did especially well.

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In fact, none of these are the case this summer was not unprecedented on any of these dimensions and no upward trend is detectable in long-term drought or fire data.

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We see it when our rescue workers rush to help others in times of fire and drought and flooding rains.

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