1. 形容詞
   無聲的
   靜悄悄的, 完全靜寂的
   深不可測的
   

   同義字詞
   hushed,muted,noiseless,quiet,quieted,silent,still,stilly
   

例句

1. I whistled a soundless tune.
2. The North Sea lies soundless .
3. The movement was swift, soundless .
4. Sabine's lips parted in a soundless gasp.
5. Hurrying through the underworld, soundless .
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