altricial

adj.(of hatchlings) naked and blind and dependent on parents for food

1. Altricial birds are born blind and helpless, depending on their parents for food and protection.
   需亲代照顾的鸟类出生时是盲目的且无助的，依赖父母提供食物和保护。
2. The altricial nature of mammals means that their young require extensive care after birth.
   哺乳动物的需亲代照顾特性意味着它们的幼崽在出生后需要大量照顾。
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