以玉米乙醇为例，我们不仅仅是被鼓励将粮食效率低下地转化成燃料；而且还禁止进口竞争；同时，炼油厂还被要求将乙醇掺混到他们的汽油之中。
In corny ethanol, for example, we are not only incented to turn food crops inefficiently into fuel; competing imports are banned; and refiners are required to blend ethanol into their gasoline.
哈马斯已经严格加强了海关和护照检查，而且限制商人的出国许可，同时还限制了货物的进口，比如汽水。
It has stiffened customs and passport checks and is limiting exit permits for merchants.
张国宝还称，去年中国安装的清洁能源设备有50%都是进口的，而且很多供货商(比如美国通用电气)的销售量都是惊人的。
Zhang said 50 percent of clean energy equipment installed in China last year was imported and suppliers such as General Electric Co. have made substantial sales.
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