单词 | aphelion |
释义 | a·phe·li·on ![]() n.pl. a·phe·li·a(-le-ə) The point on the orbit of a celestial body that is farthest from the sun. [FromNew Latinaphelium : Greekapo-, apo- + Greekhelios, sun; see sāwel- in the Appendix of Indo-European roots.] ![]() |
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