声音

例句：

1. 1.The dog barked loudly at thedoor.
   狗对着门大声吠叫。
2. 2. Shespoke clearly and distinctly.
   她说话清晰、明确。
3. 3. The music filled the room witha pleasant sound.
   音乐充满了房间，发出悦耳的声音。