lustrum

英 ['lʌstrəm]美

n. 五年时间；人口普查

英文词源

lustrum (n.)

(plural lustra), "purification of the Roman people every five years," 1580s, from Latin lustrum, perhaps from root of luere "to wash," related to lavere (see lave). Or [Watkins, Klein] from PIE *leuk-stro-, from base *leuk- "light, brightness."

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