Direct manipulation of objects on a screen is made possible through the use of a pointing device. Clearly, the best way to point to something is with your fingers.
使用点操作设备就可以直接操作在屏幕上的对象，显然最好的指点设备莫过于自己的手指。
Direct manipulation of objects on a screen is made possible through the use of a pointing device. Clearly, the best way to point to something is with your fingers.
使用点操作设备就可以直接操作在屏幕上的对象，显然最好的指点设备莫过于自己的手指。
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