altricialyoudaoicibaDictYouDict[altricial 词源字典]
"(Of a young bird or other animal) hatched or born in an undeveloped state and requiring care and feeding by the parents", Late 19th century: from Latin altrix, altric-, feminine of altor 'nourisher', from alere 'nourish'.[altricial etymology, altricial origin, 英语词源]