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One is the focal pattern wherein depigmentation occurs in a limited area .

一是协调格局下局部地区发生脱失.

As regards natural selection , depigmentation allows greater penetration of the skin by ultraviolet b ( uvb ) , which is needed to synthesise previtamin d3 .

就自然选择来说，色素脱失可以使更多的紫外线b（uvb）穿过皮肤，而人体需要紫外线b合成维他命原d3。

Conclusions skin changes of arsenism begin from hyperkeratosis , next affected by depigmentation and hyperpigmentation .

结论地方性砷中毒皮肤改变从角化开始，先后出现脱色和色沉。

The former refers to the radian brow , eyebrow in the direction and continuity , but still eyebrow health ; the latter refers to defect or depigmentation eyebrows , mostly because of chemical injury , thermal burns or skin diseases caused by limitations .

前者是指眉的弧度、眉毛的方向及连续性，但眉毛仍较健康；后者指眉毛缺损或脱失，多是因化学伤、热烧伤或局限性皮肤病所致。

But in some parts of the world , such as central africa , mutations that result in albinism ( or a significant depigmentation ) of a baby can provoke fear and superstition and sometimes even infanticide .

但是在世界上的某些地区，比如中非，由于基因突变而导致的白化病或色素脱失的婴儿会导致人们的害怕和迷信，有时甚至会被杀死。