在可见光波段，很多尘埃是不可见的。
并已制造了可在红外光和可见光波段工作的隐身器件。
Related cloaks have been made to work with infrared rays and visible light.
大部分隐身斗篷都是在非可见光波段隐藏物体。
Most of the invisibility cloaks that have been demonstrated to date conceal objects at frequencies that are not detectable by the human eye.
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