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perigee

noun
/ˈperɪdʒiː/
/ˈperɪdʒiː/
(astronomy天文学)
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  1. the point in the orbit of the moon, a planet or other object in space when it is nearest the planet, for example the earth, around which it turns近地点(绕地运动的天体轨道上离地心最近点) compare apogee
    Word Originlate 16th cent.: from French périgée, via modern Latin from Greek perigeion ‘close round the earth’, from peri- ‘around’ + ‘earth’.

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