Head circumference is an indicator of brain volume, so a greater increase in head circumference in a newly-born baby suggests more rapid brain growth.
头围是大脑体积的一个衡量指标，所以新生儿头围越大，表明他们的大脑发育越快。
3
One button handles most functions including call answer and redial, while a smaller button on the top edge controls volume and turns the status indicator on and off.