音量控制电位的阿尔卑斯山是不平凡的顺利和无噪音，使声音的水平在逐步提高非常即使在7 - 10点区域。

The Alps potentiometers for volume control are marvelously smooth and noise free, allowing a very gradual increase in sound levels even in the 7-10 o 'clock region.

youdao

重要的是要调低音量，每天使用个人音乐播放器的时间要控制在1小时以内，这样可以有效减少暴露在噪音中的时间。

Thee full report argued: "While it is important to keep the volume down, limiting the use of personal audio devices to less than one hour a day would do much to reduce noise exposure."

youdao

重要的是要调低音量，每天使用个人音乐播放器的时间要控制在1小时以内，这样可以有效减少暴露在噪音中的时间。

Thee full report argued: "While it is important to keep the volume down, limiting the use of personal audio devices to less than one hour a day would do much to reduce noise exposure."

youdao