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English Answer:
The belief that all babies are born with white skin is a misconception. Human skin color is determined by the amount and type of melanin, a pigment produced by cells called melanocytes. Newborns can have a wide range of skin colors depending on the genetic makeup inherited from their parents. This can include shades of pink, red, brown, or even very dark tones. The initial color of a baby's skin can change over the first few days or weeks as the baby's circulatory system and melanin production become more established. It's important to note that the environment, particularly exposure to sunlight, can also influence skin color over time.

中文回答：
认为所有婴儿出生时皮肤都是白色的是一种误解。人类皮肤的肤色是由黑色素细胞产生的黑色素的数量和类型决定的。新生儿的皮肤肤色可以有广泛的范围，这取决于他们从父母那里遗传的基因组成。这可能包括粉色、红色、棕色甚至非常深的色调。随着婴儿的循环系统和黑色素生成变得更加稳定，婴儿最初的皮肤肤色可能在最初的几天或几周内发生变化。需要注意的是，环境，特别是阳光照射，随着时间的推移也可以影响皮肤肤色。

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This is a white, greasy, cheeselike substance that covers the skin of many babies at birth. It's formed by secretions from the baby's oil glands and protects the baby's skin in the amniotic fluid during pregnancy. Vernix may not be present in babies who are born post-term (after 41 weeks of pregnancy).read more >>