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词汇 planetary
词源

planetary adj.

1590s, "of or pertaining to a planet;" see planet + -ary. Perhaps from or based on Late Latin planetarius "pertaining to a planet or planets," but according to OED this is attested only as a noun meaning "an astrologer." Planetary nebula, so called for its shape as seen through a telescope, attested from 1785.

updated on July 05, 2020

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更新时间:2025/5/2 7:11:17