The coal is heaped and burned, often by the miners' wives, and then sold door-to-door as cooking fuel.
煤矿被堆起来燃烧，通常是由矿工的妻子完成的，然后作为做饭用的燃料卖给各家各户。
2
Mini explained that to have mounted the door on the left-hand side would have required an expensive relocation of the fuel filler system.
宝马公司解释称，如果要将这扇小门装在车身左边，就得让汽车的加油系统搬家，耗资必将十分巨大。
3
Mr. Medvedev did appear Tuesday to leave a door open to co-operating with the West in applying economic sanctions against Iran over its nuclear-fuel program.