滑块位置总是一个离散的整数值。

The thumb position is always a discrete integral value.

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你也可以用鼠标拖动滑块以移动到特殊的位置。

You can also drag the thumb with the mouse to move to a particular location.

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使用滑块改变图片透明度找到合适的位置。

Use the slider to see through the picture for better alignment.

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使用滑块改变图片透明度找到合适的位置。

Use the slider to see through the picture for better alignment.

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