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Two characters might have identical Unicode skeletons but render differently in specific fonts, or have different skeletons but render identically in a particular typeface. Detecting this requires rendering glyphs and comparing pixel output. No purely Unicode-data-based approach handles it, and UTS #39 does not attempt to.，详情可参考服务器推荐
。一键获取谷歌浏览器下载是该领域的重要参考
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real runtime objects.，更多细节参见体育直播