怀孕第三个月(正常标准) Third month of pregnancy

怀孕第三个月 Third month of pregnancy

大小：身长大约9cm，体重约48g。

Size: About 9cm in length and 48g in weight.

脸部：脸已完全成形，轮廓分明，看得出脸颊、高高的额头及小巧的鼻子。虽然眼睛仍然闭着，但眼睛构造已经完成，嘴部齿芽已经萌出。

Face: The face has been fully formed and has a distinct outline. Cheeks, high forehead and small nose can be seen. Although the eyes are still closed, the eye structure has been completed and the tooth buds of the mouth have sprouted.

四肢：长出指甲，手臂和腿部开始活动。

Limbs: Fingernails grow, arms and legs begin to move.

骨骼：开始形成且迅速发育。

Skeleton: Begins to form and develop rapidly.

性器官：卵巢或睾丸已形成，外生殖器也正在成形。

Sexual organs: ovaries or testicles have been formed, and external genitals are being formed.

胎动：在这个月结束前，他已经会动了，他偶尔会动动身体，弯弯四肢，不过你可能还感觉不出来。

Motion: By the end of this month, he's already moving. He occasionally moves and bends his limbs, but you may not feel it.

羊膜：保护胎儿的羊水被一层膜包着，胎儿漂浮在羊水中，有足够的空间让他运动。羊水的温度略高于体温，大约为37.5，此时胎儿开始吞咽羊水。

Amniotic Membrane: The amniotic fluid that protects the fetus is covered by a membrane. The fetus floats in the amniotic fluid and has enough space for him to move. The temperature of amniotic fluid is slightly higher than the body temperature, about 37.5, when the fetus begins to swallow amniotic fluid.