人类粪便或成未来汽车燃料
<p><span word="While">While</span> <span word="experts">experts</span> <span word="are">are</span> <span word="developing">developing</span> '<span word="greener">greener</span>' <span word="alternative">alternative</span> <span word="fuel">fuel</span> <span word="sources">sources</span>, <span word="a">a</span> <span word="group">group</span> <span word="of">of</span> <span word="undergrads">undergrads</span> <span word="are">are</span> <span word="creating">creating</span> <span word="a">a</span> <span word="more">more</span> <span word="natural">natural</span> <span word="one">one</span>.</p><p>当专家们还在研发更环保的燃料时，一群在校生已经开始制作一种天然的燃料。</p><p><span word="The">The</span> <span word="team">team</span> <span word="is">is</span> <span word="working">working</span> <span word="towards">towards</span> <span word="producing">producing</span> <span word="a">a</span> <span word="biofuel">biofuel</span> <span word="that">that</span> <span word="uses">uses</span> <span word="human">human</span> <span word="and">and</span> <span word="animal">animal</span> <span word="excretion">excretion</span>, <span word="with">with</span> <span word="the">the</span> <span word="hopes">hopes</span> <span word="of">of</span> <span word="replacing">replacing</span> <span word="harmful">harmful</span> <span word="gasoline">gasoline</span>, <span word="diesel">diesel</span> <span word="and">and</span> <span word="jet">jet</span> <span word="fuel">fuel</span> <span word="that">that</span> <span word="dominate">dominate</span> <span word="the">the</span> <span word="market">market</span>.</p><p>这个研究小组正在用人和动物的排泄物生产生物燃料。他们希望以此替代目前占据市场主导地位但却有害的汽油、柴油和喷气燃料。</p><p><span word="By">By</span> <span word="engineering">engineering</span> <span word="Bacillus">Bacillus</span> <span word="subtilis">subtilis</span>, <span word="researchers">researchers</span> <span word="are">are</span> <span word="able">able</span> <span word="to">to</span> <span word="break">break</span> <span word="down">down</span> <span word="proteins">proteins</span> <span word="and">and</span> <span word="transform">transform</span> <span word="the">the</span> <span word="left">left</span> <span word="over">over</span> <span word="material">material</span> <span word="into">into</span> <span word="alcohol">alcohol</span> <span word="biofuels">biofuels</span> <span word="and">and</span> <span word="ammonia">ammonia</span>.</p><p>通过对枯草杆菌进行处理，研究者们成功地分离了蛋白质，把排泄物转化为酒精生物燃料和氨气。</p>
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