Talk about an old-growth forest.

谈谈古老的森林。

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Some long-range projects might be the preservation of an old-growth forest, the reforestation of mining tracts, or planting new forest areas to forestall soil erosion.

一些长期项目将会是旧林地的维持，矿产区域的重新造林或是种植新的森林地区，以防止土壤被侵蚀。

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We assumed that this growth of old trees is pristine rain forest because the only way we know how to manage a forest is to clear the trees, and these weren't clear-cut.

我们之所以认为这片老树是原始雨林，是因为我们自己所知道的唯一的管理树木的方式就是把树砍掉，而这里没有明显的砍伐痕迹。

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Some experts say only five percent of Finland's old-growth forest remains.

VOA: special.2009.04.22

There is already so little old-growth forest left that it threatens the long-term survival of many plant and animal species, so continuing to log such forests is deeply irresponsible.

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Explore: The Wild Pacific Trail skirts rocky cliffs and meanders through dense old-growth rain forest to reveal dramatic vistas of the moody, tossing surf.

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One of those surprises came during a visit to Eglin Air Force Base on the Florida panhandle, where he went to see the old-growth long-leaf pine forest.

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