而如今开发树木作燃料的讨论与高科技密切相关，这就是从树木中提取乙醇，取代通常是从玉蜀黍（玉米）或蔗糖中提取的一种生物燃料。
But now the notion of exploiting trees for fuel is being updated with a high-tech twist. The idea is to make ethanol, a biofuel that usually comes from maize (corn) or sugar cane, from trees instead.
玉米也称为玉蜀黍，可作为淀粉和蔬菜食用。
Also known as maize, corn is eaten as a starch and as a vegetable.
玉蜀黍又称为印第安玉米。
美国人把玉蜀黍叫做印第安玉米，或直接把它叫做玉米。
Maize is called 'Indian corn' or simply 'corn' by Americans.
美国人把玉蜀黍叫做印第安玉米，或直接把它叫做玉米。
Maize is called 'Indian corn' or simply 'corn' by Americans.
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