triennial
柯林斯詞典
1. ADJ relating to, lasting for, or occurring every three years 每三年的
2. N a third anniversary 三周年紀(jì)唸
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triennial /tra???n??l/
劍橋詞典
- happening every three years
每三年的；三年一次的
the association's triennial conference 該協(xié)會(huì)三年一屆的大會(huì) 返回 triennial