This active process also enhances our frequency selectivity.

有源放大过程也能增强我们对频率的辨识。

This same instability also enhances our frequency selectivity, for a given hair cell tends to oscillate best at the frequency at which it normally trembles when it's not being stimulated.

同样的不稳定性也能增强我们对频率的辨识度，因为某个毛细胞摆动的最佳频率，一般是它在不受刺激时自然抖动的频率。