增强功能可见性。功能可见性是对象的一种属性，指示对象是如何被使用(对照使用标签解释它)。
Improve affordance. Affordance is a property of an object that suggests how the object is used (as opposed to using a label to explain it).
关键在于光纤球功能的开发，一种光学设备，不仅要保持自身的不可见性，还要能减缓光线。
The key development lies in the ability of the sphere, an optical device, not only to remain invisible itself but to slow light.
您可以通过对内容使用隐藏的标签，然后关闭其可见性来实现此功能。
You can achieve this functionality by using hidden tags with the content, then switching out their visibility.
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