贝尔关于听力和语言的研究帮助他更进一步的去试验助听设备。
Bell's research on hearing and speech further led him to experiment with hearing devices.
助听辅助犬对听力损伤严重的人有着巨大的帮助。
Hearing dogs for the deaf can be invaluable to people with a profound hearing loss.
助听辅助犬对听力损伤严重的人有着巨大的帮助。
Hearing dogs for the deaf can be invaluable to people with a profound hearing loss.
应用推荐