1. We installed soundproof windows to keep out the noise from the busy street.
我们安装了隔音窗户，以阻挡来自繁忙街道的噪音。
2. The soundproof walls in the recording studio ensure that no outside noise interferes with the audio quality.
录音棚里的隔音墙确保外部噪音不会干扰音频质量。