| 单词 | triennial |
| 释义 | triennialWord family adverbtrienniallyadjectivetriennialnountriennium Chronology tri·en·ni·al /traɪˈeniəl/ adjectiveadj TMChappening every three years 三年一次的 → annual Examples from the Corpus triennial• At their triennial congress on Sept. 15-21,1990, delegates adopted a new party programme replacing that of 1975.• June 30 would mark the end of the triennial contract cycle that had punctuated labor-management relations in the copper industry since midcentury.• The triennial election for the Senate Presidency took place on Oct. 2.• The Fourth Lateran Council, held at the end of his reign, imposed a triennial twentieth for the same purpose. (1500-1600) Latin triennis, from triennium “three years”, from tri- + annus “year” |
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