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单词 aphelion
释义 aphelion
 —aphelian,  adj.  
 /euh fee"lee euhn, euh feel"yeuhn, ap hee"lee euhn/,  n.  ,  pl.   aphelia /euh fee"lee euh, euh feel"yeuh, ap hee"lee euh/.
 Astron. the point in the orbit of a planet or a comet at which it is farthest from the sun. Cf. perihelion.
 [1650-60; Hellenized form of NL aphelium < Gk *aphélion (diástema) off-sun (distance), neut. of *aphélios (adj.), equiv. to ap- AP-2 + héli(os) sun + -os adj. suffix. See APOGEE]
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更新时间:2025/1/22 21:11:51