1、A normal baby's head takes about a year to become relatively set, as the skull bones gradually close and the fontanelles (the soft spots between the bone plates of the skull) harden.
正常婴儿的头部需要大约一年的时间才能相对固定，因为颅骨逐渐闭合，脑门缝（颅骨板之间的软点）会变硬。
2、The doctor carefully examined the fontanelle of the newborn to ensure its normal development.
医生仔细检查了新生儿的头顶软骨缝以确保其正常发育。