soundlessly
adv. 无声地；完全静寂地；静悄悄地
近义词：quietly，noiselessly，silently，stealthily，mutely，
英英释义
Adverb
- without a sound;
"he stood up soundlessly and speechlessly and glided across the hallway and through a door"
例句
用作副词(adv.)
- He walks slowly and soundlessly like a leopard.他象一只豹子一样缓慢无声地走着。
- I cried soundlessly in night that day.那天夜里我无声地哭了。
- I counted ten in all, gliding almost soundlessly through the bleak white glare.一共有十来个，静悄悄地在这耀眼的灯光中挪动。