subsong

/suhb-sawng, -song/US // ˈsʌbˌsɔŋ, -ˌsɒŋ //UK // (ˈsʌbˌsɒŋ) //

副歌,子歌,亚松,子母歌

Definitions

n.名词 noun

1
- : an unstructured, often rambling vocalization of low volume heard in young birds and, at the start of the breeding season, in adult birds of certain species.