如果鼠标移动目标改变到垂直方向，用户不得不重新开始。

If the mouse focus changes its vertical position, users have to start from the beginning.

youdao

如果鼠标移动目标改变到垂直方向，用户不得不重新开始。

If the mouse focus changes its vertical position, users have to start from the beginning.

youdao