英语语法分析

Cellulosic ethanol would address many of these problems.

纤维乙醇可以回答这些问题。

But cellulosic biofuel has so far failed, on an epic scale, to deliver.

但是纤维素生物燃料目前为止难以大规模运输。

For one thing, even if cellulosic ethanol can be made viable, that feat remains years away.

其中一个原因就是，即使纤维素乙醇能够生存下来，其效果也在多年之后方能显现。