What you'll find is a variation in design and usage of the available kernel APIs, but each is useful for instruction or as a starting point for a new device driver.
在这里可以找到的是各种设计的变化以及对可用内核api的使用，但是所学到的每一点都会非常有用，都可以作为新设备驱动程序的起点。
The sharp variation of luminance at the entrance and exit of highway tunnel will cause the difficulty in visual adaptation of the driver, and even lead to traffic accidents.
公路隧道进出口亮度的急剧变化会造成驾驶员视觉适应困难，严重时甚至导致交通事故。
The sharp variation of luminance at the entrance and exit of highway tunnel will cause the difficulty in visual adaptation of the driver, and even lead to traffic accidents.
公路隧道进出口亮度的急剧变化会造成驾驶员视觉适应困难，严重时甚至导致交通事故。
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