noun🔗Share综荐骨, 腰荐骨。 (of birds) The bone composed of the sacrum and some lumbar or caudal vertebrae fused together."During the bird skeleton lesson, the teacher pointed to the fused vertebrae and explained, "This section, the synsacra, provides crucial support for flight and landing." "在鸟类骨骼课上，老师指着这些融合的脊椎解释说：“这一部分，也就是综荐骨，为飞行和着陆提供至关重要的支撑。”anatomybirdbodyorganismanimalphysiologyChat with AIVocabulary GamePractice Reading
