triennial
/traɪˈeniəl/ 38relating to, lasting for, or occurring every three years 每三年的
adjective [原级]每三年的；连续三年的
We signed a triennial contract yesterday.
昨日我们签了一项三年的合约。
noun [专属名词]三年生植物
According to the agreement, the bank provided 30 billion annually triennial comprehensive credit lines.
根据协议，农行提供三年期每年30亿元的综合授信额度。
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