人类学家研究说,这个传统有3种解释：一是古时人们为防止外族入侵者或奴隶

人类学家研究说,这个传统有3种解释：一是古时人们为防止外族入侵者或奴隶主看上本族的姑娘,故意把她们打扮得吓人以保其纯洁；二是防止魔鬼从口里进入身体；三是女子美丽的标志。
心理学家则解释说,人类有一种自残的本能,越原始的民族表现得越明显。自残的潜意识是要显示自己的存在和与众不同,保护自己不被历史淹没。

結果 (中文) 3:

Anthropologists study said, this tradition has 3 kinds of explanations: one is the ancient people to prevent alien invaders or slave owners fancy native girl, deliberately dressed them horribly to ensure its purity; two is to prevent the devil from the mouth into the body; three is a sign of the beautiful woman.Psychologists explain that human beings have an instinct of self mutilation, more primitive people appeared more obviously. From the subconscious is to show their existence and out of the ordinary, to protect themselves from being submerged in history.