switchgrass

Cellulosic ethanol made from switchgrass and wood chips was an example he adding that the U.

他举用柳枝稷和刨花为原料生产的纤维素乙醇为例.

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And strange to say the ordinary, just pick a fold down switchgrass.

说来奇特而又普通, 就只是一根随手折下来的柳枝.

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