Triennially
adv. 每三年地
📖 牛津释义
triennially
adv: The games occur triennially. 运动会每三年举行一次.
🗣️ 情景例句
Staff only.
员工专用。
A friend is never known till a man have need.
不到患难时，永远不能认识真正的朋友。
I'm not sure how this works.
我不懂这是如何操作的。