日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

您現在的位置: Language Tips> Easy English> Odd Question  
 





 
Why does hair turn gray?
[ 2004-10-18 07:40 ]
   
  Gray hair
   
  Why does hair turn gray?
Hair goes gray becausepigmentcells in the hair base at the roots of the hair stop producingmelanin.

It doesn't matter if you are fair-haired or dark-haired you have the same chances of getting gray hair. However, it is more noticeable in darker haired people.

Graying of the hair generally starts at the age of around 30 for males and 35 for females however since theonsetof this phenomena varies greatly from person to person, age is not the most accurate indicator.

The graying of hair appears to be genetically determined but the connection isn't at all clear.

So for now, your hair turning gray is just one of those mysteries of science that we have yet to solve. Butsalt and pepperhair always did look distinguished.

 

note:

pigment: 色素
melanin: 黒色素

 

 

 

onset: 開始

 

 



salt and pepper: 黑白相間而呈灰色的

 
 
相關文章 Related Stories
 
 
 

本頻道最新推薦

     
  為什么下雪時天氣暖
  You are the smartest fish I've ever seen!
  Dog burger
  為什么老了脾氣好
  飛蛾為什么撲火

論壇熱貼

     
  開個題目大家扯:hotel & restaurant
  追求某人
  請教工商年檢如何翻譯
  How to translate “中國老字號”into English?
  "港股直通車"怎么翻譯?
  兩免一補怎么說?




主站蜘蛛池模板: 涩色婷婷狠狠第四四房社区奇米 | 日本高清天码一区在线播放 | av毛片 | 亚洲免费在线看 | 亚洲美女亚洲精品久久久久 | 一呦二呦三呦国产精品 | 成年男女男免费视频网站不卡 | 色爱阁| 欧美亚洲在线观看 | 五月天激情视频在线观看 | 热久久精品在线 | 91短视频版在线观看免费大全 | 午夜亚洲精品 | 亚洲伊人色一综合网 | 精品一区二区三区四区 | 高清一区二区在线观看 | 日韩精品毛片 | 污视频免费看网站 | 狠狠色狠狠色 | 欧美久久久久 | 日韩在线黄色 | 日韩欧美在线免费观看 | 一区二区欧美视频 | 成人精品一区二区三区 | 国产小视频免费在线观看 | 新91| 日韩精品一区二区在线观看 | 久久国产乱子伦精品免 | 色窝视频 | 精品国产乱码久久久久久丨区2区 | 超碰一区| 狠狠添| 亚洲欧美日韩在线一区二区三区 | 久久国产免费 | 亚洲国产精品综合久久 | 亚洲国产日韩欧美在线 | 日韩影音 | 色噜噜色噜噜天天拍一拍 | www亚洲精品 | 羞羞哒哒视频 | 午夜影院免费 |