It may be possible to plant fast-growing trees and grasses in the future.

在将来有可能种植快速生长的树和草。

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These are fast-growing trees and shrubs whose leaves and roots help improve soil.

这是一种速生的树木和灌木，它的叶子和根系有助于改善土壤。

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Producing ethanol by breaking down cellulosic materials, such as switch-grass or fast-growing trees like hybrid poplars, with enzymes is promising.

利用?降解纤维物质——例如柳枝稷和速生杂交白杨——生产乙醇是很有希望的。

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There are pilot-projects with fast-growing trees that can be pollarded for firewood, and drip-feed irrigation for saplings.

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It can then be turned into plantations growing palm oil, rubber and fast-growing trees for the booming pulp-and-paper industry.

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