to begin a discussion of something difficult開始討論;提出(難題等)
formal to open a bottle or barrel in order to drink its contents(爲飲用)開啓(酒瓶、酒桶等)
a brooch 胸針
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net切换为简体中文