sound·less /ˈsaʊn(d)ləs/
(a.)無聲的,完全靜寂的,靜悄悄的
Sound·less a. Not capable of being sounded or fathomed; unfathomable.
Sound·less, a. Having no sound; noiseless; silent. -- Sound*less*ly, adv. -- Sound*less*ness, n.
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soundless
adj : marked by absence of sound; "a silent house"; "soundless
footsteps on the grass"; "the night was still" [syn: silent,
still]