如何预测胎儿大小简介：Because they are so outstanding, they are like the sun and the moon, which never meet, but still rotate in their respective orbits due to the force of gravity, neither colliding nor falling, just like people on parallel lines never intersect.
Because they are so outstanding, they are like the sun and the moon, which never meet, but still rotate in their respective orbits due to the force of gravity, neither colliding nor falling, just like people on parallel lines never intersect.
