Triennial
a. 每三年一次的\\nn. 三年生植物, 三年发生一次的事
📖 牛津释义
triennial
adj
lasting for or happening every three years 持续三年的; 每三年一次的.
🗣️ 情景例句
He was killed on the spot.
他当场被杀。
We can't decide where to go.
我们不能决定去那里。
good.take care with the order, will you?
很好，那就麻烦你们多操心了。