All of this makes the net benefit of reforestation extremely difficult to measure.
所有这一切都使得重新造林的纯利益极难估算。
A reasonable use of forests and reforestation are the best choices in the long run.
从长远来说对森林的合理利用和植树造林是最好的选择。
A reasonable use of forests and reforestation are the best choices in the long run.
从长远来说对森林的合理利用和植树造林是最好的选择。
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