More than half the cars in Brazil now have flex-fuel engines, and that figure should rise to 90% by 2017, according to Marcos Jank of UNICA, the sugar-industry association in S?o Paulo.

目前巴西一半以上的汽车安装多重燃料引擎，而这个数字到了2017年应会上升至九成，根据圣保罗甘蔗业公会的UNICA的Marcos Jank表示。

youdao

Rocket fuel is covered under the new law, prompting the National Association of Rocketry and the Tripoli Rocketry Association to file suit in federal court in Washington, D.

FORBES: The Two-Month Window

According to the International Air Transport Association (IATA) jet engines today are 40 percent more fuel-efficient than those designed in the 1960s, with pollutants such as soot and sulphur now almost completely eliminated from jet exhaust.

CNN: Green wing:?can technology make flying more environmentally friendly?