May I ask a simple question about the meaning of "the silence was piercing" in the follow sentence. Now that there was no longer the sound of my soggy footsteps, the silence was piercing.The birds were quiet, too, the drops increasing in frequency, so it must be raining above. 因为不在有我沉闷的脚步声了，所以沉默是piercing的，请问，这个单词，piercing是什么意思呢？ because there was no sound ,so the silence was piercing?what is the meaning of piercing?