occipital fontanelle

例句：

1. 1. The child's occipital fontanelle is visible through the scalp.
   孩子的枕骨囟门可以通过头皮看到。
2. 2. During birth, the occipital fontanelle is a small opening in the skull.
   出生时，枕骨囟门是颅骨中的一个小开口。
3. 3. The occipital fontanelle can be used as an indicator of brain development during childhood.
   枕骨囟门可以作为儿童大脑发育的一个指标。