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词汇 epicycle
词源

epicycle n.

"small circle moving on or around another circle," late 14c., from Late Latin epicyclus, from Greek epikyklos, from epi (see epi-) + kyklos "circle, wheel, circular motion, cycle of events" (from PIE root *kwel- (1) "revolve, move round"). Related: Epicyclic.

updated on April 26, 2017

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更新时间:2025/5/29 17:32:58