有一些旋钮在上面，用来调节显示器亮度，对比度，颜色以及屏幕大小和位置等。
On the monitor, there are some knobs which are used to adjust its lightness, contrast, color and the screen's size and location, etc.
有一些旋钮在上面，用来调节显示器亮度，对比度，颜色以及屏幕大小和位置等。
On the monitor, there are some knobs which are used to adjust its lightness, contrast, color and the screen's size and location, etc.
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