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
It's quite complete.
已经相当齐全了。
Some students quit school due to poverty.
一些学生因贫困而辍学。
What do you think I should do then?
那您认为我该怎么做呢？