人们认为大多数使地球升温的温室气体源于燃烧化石燃料，而农业在减轻这些气体的排放方面可以起重要作用。
Most of the greenhouse gases believed to be warming the planet come from the burning of fossil fuels, but agriculture can play an important role in mitigating those emissions.
月球引起了每个白天的潮汐，同时也给自己带来了副作用——它正沿着螺旋状轨迹慢慢的远离地球。这个可以用岩石和化石上的线索加以证明的现象，昭示了这颗卫星最初和最终的命运。
The moon is slowly spiraling away from Earth as it drives day-stretching tides, a phenomenon recorded in rocks and fossils that provides clues to the satellite's origin and ultimate fate.
这些“社会的活化石”，对于认识和研究舟船的产生，有重要的借鉴作用。
These "social living fossils" are very conducive to the understanding and researching into this generation of boats.
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