dings

例句：

1. 1.She sat on the couch with her butt sticking out.
   她坐在沙发上，屁股凸出。
2. 2.He squatted down to pick up a ball from the ground.
   他蹲下来捡起地上的球。
3. 3.The dog sat by the door, its butt wagging excitedly.
   狗坐在门口，尾巴摇个不停。