Again, the mouse position is reset to the center if the movement threshold is not reached.
同样，如果没有达到移动阈值，则将鼠标位置重设为中心。
Similar to the movement mode above, the zoom-control mode moves the mouse in the Y dimension depending on how far the ThinkPad has been tipped past the movement threshold forward or back.
类似上文的移动模式，升降控制模式将根据翻转thinkpad而超过移动阈值的程度在y维度移动鼠标。
Resetting the center position can create a jump movement upon tilt past a threshold, but is preferable in many applications to a slow drift or unknown initial state.
如果重设中心位置，那么在倾斜超过阈值后将产生一个跳跃的移动，但是在多数应用程序中，缓慢的移动或未知的初始状态比较可取。
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