A surface called the basilar membrane runs the length of the cochlea.

称为基底膜的表面贯穿耳蜗的长度。

The most important one — at least for our purposes — is the basilar membrane, a stiff band of tissue that runs alongside that middle, fluid-filled chamber.

最重要的——至少对我们来说——是基底膜，一条沿着中间充满液体的腔室延伸的坚硬组织带。