标签：Aid- - 英国华人论坛

A hearing aid is a small electronic device that assists those who are partially deaf. This apparatus isn't really seen as odd or out of the ordinary in today's society. That is because it has been around for such a long time, more than a Cen...英国华人论坛

A bone anchored hearing aid was developed back in 1977, but wasn’t approved for use in the U.S. until 1996. This aid works by being implanted in the bone, so that sound is conducted here rather than through the ear. It proves effective for...英国华人论坛