an introduction at the beginning of a book explaining its purpose, thanking people who helped the author, etc.序言,前言
an event that comes before something more important…的序幕(或前奏)
If you preface your words or actions with something else, you say or do this other thing first.为…写序言;作为…的开端(或序幕)
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net
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