adj.无声的,哑然无声
He threw his bedding over and it landed soundlessly on the snow.
把铺盖扔过去,落在雪上,没有什么声响.
She was still sobbing soundlessly.
她的哭声止了.她还在抽泣.
Joe's lips moved soundlessly.
乔的嘴唇无声地动了动。