Such findings, he says, suggest that "this network can be called on to process and store the kind of information taught in school—potentially giving students access to a range of untapped mental powers".
2018年6月六级真题(第二套)阅读 Section B
柯林斯高阶英汉双解学习词典释义
ADJ
未开采过的；未用过的
An untapped supply or source of something has not yet been used.