在视图中垂直或平行的移动文本和鼠标。
Moving the text and cursor vertically or horizontally within the view.
例如，很容易让我们的沿墙走机器人平行于左边的墙移动。
For example, it was quite easy to make your wall-following robot move parallel to the wall on its left.
然而正如它的名称所提示的，它本身是与传播材料的表面呈平行移动的，而不是穿透传播材料。
However, as its name suggests, it runs parallel to the surface of the material that is propagating it, rather than penetrating this material.
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