RR88 t?ng h?p nh?ng câu h?i th??ng g?p t? ng??i ch?i, giúp gi?i ?áp nhanh chóng m?i v?n ?? liên quan ??n vi?c s? d?ng n?n t?ng, c? th?: Davis has become deaf in the two ears, but he had a cochlear implant placed in his appropriate ear that enables him to listen to