英语词汇“perihelion”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	perihelion
释义	Word Frequency perihelion (ˌpɛrɪˈhiːlɪən) nounWord forms: plural -lia (-lɪə) astronomy the point in its orbit when a planet or comet is nearest the sun Compare aphelion Word origin C17: from New Latin perihēlium, from peri- + Greek hēlios sun
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