柯林斯詞典noiseless /?n??zl?s/ 1. ADJ Something or someone that is noiseless does not make any sound. 無聲的[ADV with v] The snow was light and noiseless as it floated down. 雪花靜悄悄地輕輕飄落下來。2. noiselesslyADV I shut the door noiselessly behind me. 我把身后的門輕輕帶上。 返回 noiseless劍橋詞典silent 無聲的，寂靜的 Above them an eagle circled in noiseless flight . 一只鷹在他們上空無聲地盤旋。 返回 noiseless