bas·so /ˈbæ(ˌ)so, ˈbɑ-/
  低音部,低音歌手
  Bas·so n.  Mus. (a) The bass or lowest part; as, to sing basso. (b) One who sings the lowest part. (c) The double bass, or contrabasso.
  Basso continuo  Mus. A bass part written out continuously, while the other parts of the harmony are indicated by figures attached to the bass; continued bass.
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  basso
       n 1: an adult male singer with the lowest voice [syn: bass]
       2: the lowest adult male singing voice [syn: bass, bass
          voice]
       [also: bassi (pl)]