Operational variable
[化] 操作变量
🧩 词语组成解析
🗣️ 情景例句
Good evening, how may I help you sir?
晚上好，你需要帮助吗？
The outsideer sees the best (or most) of the game.
旁观者清。
They are often more industrious, useful citizens than those who are never late.
他们与那些从不迟到的人相比，常常是更勤奋有用的公民。