They do a better job of stopping outside noise, so you can listen at a lower volume.
它们能更好地阻止外界的噪音，所以你可以调低音量听音乐。
2
The noise of the trains stopping or rounding curves has a high-pitchinged harshness that is difficult to describe.
列车停止和转弯时发出的噪音之尖锐刺耳实在让人无法描述。
3
This criterion can suppress the affection of minutiae to correlation coefficient and get a more accurate stopping time without knowing the noise variance.