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Not everyone agrees that cloning represents the most effective way to preserve redwoods.
不是每个人都同意克隆法是保护红杉的最有效的方法.
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Old-growth forests contain trees that are hundreds, even thousands and giant sequoias and redwoods.
成熟原始森林中有百年甚至千年古木,以洋松、巨红杉和红木为典型.
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