英语语法分析

This material is known as stover.

这种物质通常被用作柴火。

The stover is abundant and renewable resource and mainly consists of cellulose , hemicellulose and lignin.

秸秆是丰富的可再生资源，主要由纤维素、半纤维素和木质素组成。

Corn stover — that is, the leaves, stalk and cobs from the corn left in the field after harvest — cannot be made into ethanol.

而玉米秸秆，即收割玉米后留在庄稼地里的叶、茎和棒子芯，都无法得到利用。