要使得一个内核扩展成为键保护的内核扩展，您还必须定义它的私有或者半私有数据，以及它如何使用键来保护这些数据。
To make a kernel extension key-protected, you must also define its private or semi-private data and how it USES keys to protect that data.
当你想要换到键盘另一半上的键时，只要长按空格键就可以了。
Simply hold down the space bar when you want to switch to the keys on the alternate side of the keyboard.
键程也仅有短短两毫米，大约是早期设计的一半距离。
Key travel can be as short as 2mm, about half that of early designs.
因此在普通断奏中，或许下键为键深的一半，而在强力断奏中则可能要比一半还少。
Thus in normal staccato, the key drop may be about half way down, but in hard staccato, it can be less than half way.
我边说边把盖子揭开，接着把半罐沙司倒进碗里，然后把碗放进微波炉，把罐子放回冰箱，调整好时间，按下启动键。
I swiftly removed the lid as I spoke, poured half the sauce into a bowl, and then put the bowl inside the microwave and the jar back in the fridge; I fixed the time and pressed start.
我边说边把盖子揭开，接着把半罐沙司倒进碗里，然后把碗放进微波炉，把罐子放回冰箱，调整好时间，按下启动键。
I swiftly removed the lid as I spoke, poured half the sauce into a bowl, and then put the bowl inside the microwave and the jar back in the fridge; I fixed the time and pressed start.
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