Redundant subexpression
[计] 冗余子表达式
🧩 词语组成解析
[计] 子表达式
🗣️ 情景例句
May I help you, sir?
需要我帮忙吗，先生？
One beats the bush, and another catches the birds.
坐享其成。
The secret was spread among the crowd.
秘密在人群当中传播开来。