irregular bone的用法和样例：
例句
- The forked bone anterior to the breastbone of most birds,formed by the fusion of the clavicles.
鸟胸的叉骨，如愿骨大多数鸟胸骨前部的叉形骨，因锁骨合并形成的。 - Osteoblasts are seen lining the irregular trabeculae, and there is an osteoclast near the center.
不规则骨小梁周围可见成骨细胞排列，中心部位可见破骨细胞。
