a difficult question or problem难题
old-fashioned informal a violent person恶棍;暴徒
a strong person who is not easily made weaker or defeated坚毅不屈的人,意志坚定的人
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net切換為繁體中文