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The former uses coal , oxygen and steam to produce burnable hydrogen .

以前用煤、氧气和蒸汽生产可燃氢气。

Opposite her desk are recycling bins for burnable trash , plastic , glass and metal ( subdivided into aluminum and steel ) .

咨询台对面是可燃垃圾，塑料，玻璃以及金属（细分为铝和钢）的回收箱。

Development of improved burnable poisons for commerial nuclear power reactors .

商业核动力堆可燃毒物改进的发展。

I am asking for everyone who comes to bring one burnable object .

我要求大家是谁把一可燃物件。

The former uses coal , oxygen and steam to produce burnable hydrogen . The latter burns coal directly . Purifying oxygen and raising steam , however , both consume energy .

前者利用煤、氧气和蒸汽生成可燃的氢气，而后者直接燃烧煤，不过净化氧气和输送蒸汽都需要能量。