noun · to derive new words or characters from existing roots in a linguistic context

许多汉字是通过在原有字根上增加偏旁孳乳而成的。

verb · to multiply or proliferate in variety or quantity (such as difficulties or types)

随着社会发展，法律规章也日益繁杂孳乳。

verb · to breed or multiply biologically

鸟类在春季交配并孳乳后代。