For example, biomass energy generation would have to increase 7-fold to supply current primary energy demand, and up to 40-fold by 2100 given economic and energy growth projections.
比如说，生物燃料生产要提高7倍才能满足如今一些最基本的能源需求，而根据经济和能源增长的预测，到2100年将是40倍。