They soon realized that, actually, adequate hearing aids already existed, but many of the elderly who needed them and had access to them didn't have them.
좋은 보청기가 시중에 이미 존재한다는걸 알게되죠. 보청기가 필요한 노인들이 구매여력이 있는데도 보청기를 사용하지 않았습니다.