问题描述：
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What remains to be determined is how well the device will help Dennis cope with his surroundings as he begins to walk and venture further into his environment.Meanwhile,Telesensory,Inc.,is working on the development of a sonar device with somewhat the same sensitivity as Dennis’s for use by school-age children.
What remains to be determined is how well the device will help Dennis cope with his surroundings as he begins to walk and venture further into his environment.Meanwhile,Telesensory,Inc.,is working on the development of a sonar device with somewhat the same sensitivity as Dennis’s for use by school-age children.
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