Life has only recently got better for hard of hearing patients with the development of modern hearing aids and cochlear implants.

直到近年来,随着现代助听以及耳蜗植入设备的开发,听力障碍病人的生活才有了改善,不过，有了新技术。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Cochlear implants, so that's the same kind of function as a hearing aid, to improve hearing, but using a different mechanism.

人工耳蜗移植术,人工耳蜗与助听器同作用相同,都可以改善听力,只是两者原理不同

耶鲁公开课 - 生物医学工程探索课程节选

This was a huge number for me up until 2 weeks ago Besides the 100 billion neurons in the brain . there are 12-15 thousand cochlear hair cells.

直到两周前，这对我来说还是个庞大的数字,除了这一兆亿个神经元外,还有12，000到15，000个毛细胞。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选