Second Sight has succeeded by building on several decades of research into implantable devices and other neural interfaces, such as pacemakers and cochlearimplants.
This may seem steep, says Dr Greenberg, but it's similar to what the first cochlearimplants cost.
这看来是过高的，格林伯格博士说，这与第一个耳蜗植入设备的价格相差无几。
3
Some deaf and hard of hearing use cochlearimplants and hearing AIDS for spoken English, but many prefer ASL, which is an important part of deaf culture.