Quadrennial
a. 连续四年的, 每四年一次的\\nn. 第四周年
📖 牛津释义
quadrennial
adj
1 lasting for four years 持续四年的.
2 happening every fourthyear 每四年一次的.
🗣️ 情景例句
Thank you.
谢谢你。
My son wants to get married in June.
我的儿子想要在6月结婚。
But which language is the most widely spoken in the world?
但是世界上哪种语言运用最广泛？