Redundant subexpression
[计] 冗余子表达式
🧩 词语组成解析
[计] 子表达式
🗣️ 情景例句
Where do you like to live, in the city or in the country?
你喜欢住在城市还是乡村？
I'm afraid you will catch a cold.
我怕你会感染到感冒。
Let me explain why I was late.
让我解释迟到的理由。