3D CG image of a 28-week-old fetus. Over the next four weeks, its nervous system will become as advanced as a newborn's.
3D CG image of a 28-week-old fetus. Over the next four weeks, its nervous system will become as advanced as a newborn's.
3维计算机成像，显示子宫中一个28个星期大的胎儿。未来4个星期，神经系统会变得和新生儿一样发达。