英语翻译Edmund Halley was an English scientist who lived over 200 years ago.He studied the observations of comets(彗星) which other scientists had made.The orbit of one particular comet was a very difficult mathematical problem.He could not fig
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![英语翻译Edmund Halley was an English scientist who lived over 200 years ago.He studied the observations of comets(彗星) which other scientists had made.The orbit of one particular comet was a very difficult mathematical problem.He could not fig](/uploads/image/z/13913382-30-2.jpg?t=%E8%8B%B1%E8%AF%AD%E7%BF%BB%E8%AF%91Edmund+Halley+was+an+English+scientist+who+lived+over+200+years+ago.He+studied+the+observations+of+comets%28%E5%BD%97%E6%98%9F%29+which+other+scientists+had+made.The+orbit+of+one+particular+comet+was+a+very+difficult+mathematical+problem.He+could+not+fig)
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