acoustic fix

例句：

1. 1.The engineer found the acoustical fix inthe room.
   工程师在房间里找到了音调固定。
2. 2. The sound of the piano was sobeautiful that it seemed like an acousticalfix.
   钢琴的声音如此美妙，仿佛是一次音调固定。
3. 3. The singer's voicehad a unique acoustical fix thatmade her sound different from others.
   歌手的声音有一种独特的音调固定，使她与其他人的声音不同。