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胎儿的变化胎儿身长45～49厘米,体重在这4周里增加了1千克左右,大约有2.5千克了。全身开始长皮下脂肪,身体变成圆形的,皱纹也少了,皮肤呈有光泽的肤色。长满全身的细毛(毳毛)开始逐渐消退,脸上和肚
Fetal changes Fetal length 45 to 49 cm, weight in this 4 weeks increased by 1 kg, about 2.5 kg. The body begins to grow subcutaneous fat, the body becomes round, wrinkles less, the skin was shiny color. Full of fine hair (bearded hair) began to subside, his face and belly