这片经济林的收益很好，经济效益很高。
This commercial forest is very productive and can generate good economic returns.
退耕还经济林的效益值最大，生态效益以还混交林为最好。
The best efficiency is economic forest, the best zoology efficiency is mixed forest.
退耕还经济林的效益值最大，生态效益以还混交林为最好。
The best efficiency is economic forest, the best zoology efficiency is mixed forest.
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