"color is unperceivable to the touch"
同义词： imperceptible
以上来源于: WordNet
Steganograhy is to embed unperceivable data in Medias of images, audio or video.
信息隐藏是在图像、音频、视频等数字媒体中嵌入不可察觉的隐蔽数据。
However, scientists find that when people hear the name of the object in the question, these unperceivable visual images can become perceivable.
然而，科学家们现在发现当人们在问题中听到物体的名字后，这些觉察不出的影像可以变得可见。
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