Vigintennial
a. 每20年一次的
🗣️ 情景例句
having to take care of the baby all weekend.
整个周末照顾孩子。
Are you clear in your own mind what you ought to do.
你自己是否清楚该做什么？
The doctors removed a section of the mummy and sent it to a laboratory.
医生们从木乃伊身上取下一个切片，送去化验。