Semicentennial
a. 五十年一度的, 持续半个世纪的\\nn. 五十周年, 五十周年纪念
✅ 同义词
🗣️ 情景例句
Yah, I have been here only two months.
是啊，我在这儿仅两个月。
A tall tree is struck by lightning.
大树被闪电击中了。
Yes. He wanted you to ring him.
留了。他要你给他打电话。