Problem specification laguage
[电] 问题定义
🧩 词语组成解析
🗣️ 情景例句
We are four in all.
我们家共有四口人。
First come, first served.
捷足先登。
Houses -- often three storeys high -- were built of stone.
房子一般有3层楼高，用石块修建。