Ear trumpet

（重定向自Hearing trumpet）

Frederick Rein Ltd.'s catalog, displaying evolving 19th century designs

Ear trumpets are tubular or funnel-shaped devices which collect sound waves and lead them into the ear. They serve as hearing aids, resulting in a strengthening of the sound energy impact to the eardrum and thus a better hearing for a deaf or hard-of-hearing individual.

单词	Hearing trumpet
释义	Hearing trumpet 英语百科 Ear trumpet （重定向自Hearing trumpet） Ear trumpets are tubular or funnel-shaped devices which collect sound waves and lead them into the ear. They serve as hearing aids, resulting in a strengthening of the sound energy impact to the eardrum and thus a better hearing for a deaf or hard-of-hearing individual.
随便看	sleave silk sleaze bag sleazebag sleazeball sleazebucket sleazebuckets sleaze factor sleazehole sleazeholes sleazemonger sleazemongers sleazewad sleazewads sleazier story sleazily sleaziness sleazinesses sleaze sleazoid sleazoids sleazo sleazy sleb slebs slech