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词汇 perihelion
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perihelion n.

"point at which a planet or comet is nearest the Sun," 1680s, coined in Modern Latin (perihelium) by Kepler (1596) from Latinizations of Greek peri "near" (see peri-) + hēlios "sun" (from PIE root *sawel- "the sun"). Subsequently re-Greeked.

updated on March 31, 2020

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更新时间:2025/5/1 12:04:45