biological mother

[英]ˌbaiəˈlɔdʒikəl ˈmʌðə

[美]ˌbaɪəˈlɑdʒɪkəl ˈmʌðɚ

亲生母亲

[例句]When the swapped eggs hatched , nestlings used the call taught by their foster mother , not their biological mother.

交换后的蛋孵化出来后,雏鸟们的求食声同它们的生母不同,而是同它们的养母所教的相同.