其中很多特性可以实现图像的动态效果。

Many of these features allow for dynamic effects in images.

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这种动态效果出现在同时具有左、右导航菜单的网站。

The effect appears in both left - and right-side navigation menus.

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显见的难点是作者不容易在静态媒体上图解动画和动态效果。

The obvious difficulty is that trying to illustrate animations and dynamic effects by definition is not easy on a static medium.

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