adjusting volume

• 调整音量

adjusting volume的用法和样例：

例句

1. Drag the click wheel to adjust the volume.
   拖移点按式转盘以调整音量。
2. This avoids the common problem of having to manually adjust volume levels when playing audio files from different albums that have been mastered at different levels.
   这样就可以避免因制作时制定的标准不同而造成在播放不同专辑的音频文件时需要不断手动调整音量的问题。