Perpetual annuity
[医] 无限期年金\\n[经] 终身年金
🧩 词语组成解析
🗣️ 情景例句
You have thirty seconds to make a word,
你们有三十秒的时间造一个字，
Wisdom is a good purchase though we pay dear for it .
为了求知识，代价虽高也值得。
Fine.let's get together again next week.
好吧，那就下周再聚会了。