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无论在我国还是在世界上,口唇之厚薄是存在地区差异的。易言之,口唇外型与气候有密切关系,一般来说可分为南方与北方两大类型。南方型口唇的特点在于肥厚;北方型则相反,口唇显得较薄。生物学上有一个“用进废退”的通则,也就是说,愈用得多的器官愈发达,发达的器官是长
Whether in our country or in the world, there are regional differences in the thickness of lips. In short, lips and climate are closely related, in general, can be divided into two major types of southern and northern. South-type lips are characterized by hypertrophy; the northern type on the contrary, the lips appear thinner. There is a general rule in biology that “use is taken abolished,” that is to say, the more the more organs are developed, the more advanced organs are longer