“direct sound”例句

单词 direct sound 例句 DEFINITIVE EXAMPLES 权威例句〔ear trumpet〕A horn-shaped device formerly used to direct sound into the ear of a hearing-impaired person.号角状助听器：一种号角状助听器，早期用于给听力受损的人助听用美国传统 　 英语例句辞典收录了55906...