Noun:

1. having the timbre of a loud high-pitched sound

stridencen.刺耳

shrillnessn.尖锐刺耳

1. And increasingly we feel the need to match the Republican right in stridency and hardball tactics.
   并且，我们渐渐地感到在尖锐和强硬政治策略上，有必要与共和党的右派较量一下。