abbr. 
理观测卫星（Orbiting Geophysical Observatory）
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interreduplication, interreflectance, interreflection, interreges, interregional, interregna, interregnum, interrelate, interrelated, interrelation,
相似单词
ogival, ogive, Oglala, ogle, Oglethorpe, OGO, Ogopogo, OGPU, ogre, ogreish,