rat-a-tat /'rætә'tæt/ 📖 中文释义 n. 敲门声, 砰砰声 📘 English Definition(英文释义) n a series of short sharp taps (as made by strokes on a drum or knocks on a door) ← rat's-tail cactus R 字母词表 rat-a-tat-tat →