rat-tat

例句：

1. 1.The mouse-tat was so fast that it almost caught the bird.
   老鼠的叫声非常快，几乎让鸟落网。
2. 2.She was swimming-tat across the pool when she heard a car approaching.
   她正在泳池里游泳时听到了汽车的声音。
3. 3.The cat scratched-tat at the wallpaper as it slept.
   猫在睡觉时用爪子刮壁纸。