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(xiàn)在的位置: > Language Tips > Easy English > Odd Question  
 





 
指甲上的白斑是怎么回事
[ 2007-05-14 13:38 ]

我們的指甲上有時(shí)會(huì)出現(xiàn)一些白色的小點(diǎn),對(duì)于這些白斑,各個(gè)民族、各種文化都有不同的說法。不過從醫(yī)學(xué)上看,白斑確實(shí)也是一種病變哦。我們來看看詳細(xì)的解釋吧。

Some cultures see the white spots as a good luck sign, and even call them fortune or gift spots. There's also the old idea that someone with a white spot on a fingernail is in love, or that the number of white spots equals the number of "sweethearts" a girl has. In an Alice Hoffman novel, a white spot appeared on a character's fingernail each time he lied, a telltale sign like Pinocchio's growing nose.

But fibbing, falling in love, or winning the lottery actually have nothing to do with white spots, unless you happen to hit one of your fingers in all the excitement. Dermatologists (skin doctors) say that white spots and smeary streaks happen to all of us, and are usually nothing to worry about.

The official name for white nail spots is the somewhat scary-sounding punctate leukonychia. (In total leukonychia, the entire nail turns white.) Kids and adults often have one or more random white dots or marks on their nails, especially if they are hard on their hands. Dermatologists say the spots appear because of repeated dings to the nail bed at the base of a fingernail (say, by a striking ball when playing sports). Much rarer causes include infections, systemic illnesses and dietary deficiencies.

White spots are a mix of keratin (a tough protein) and air. The spots are places where, due to an minor injury to the nail bed, new nail cells were incompletely formed or "keratinized." The white spots will rise higher as the nail is pushed up by new growth from the nail bed. Since a nail grows about one millimeter in 10 days, it can take months for the spotted part to reach the tip for trimming off. Meanwhile, you can look at your nail spots and relive memories of all the insults and injuries to your fingers in the past year.

(來源:how-come.net 英語點(diǎn)津 Annabel 編輯)

點(diǎn)擊察看更多趣味百科知識(shí)

 
 
相關(guān)文章 Related Stories
 
先有雞還是先有蛋? 為何失戀后很難再愛一次
牛奶補(bǔ)鈣是謊言? 真的有一見鐘情嗎?
         
 
 
 
 
 
         
 
 

48小時(shí)內(nèi)最熱門

     

本頻道最新推薦

     
  2007年母親節(jié)特輯
  為什么會(huì)有黃昏
  向媽媽表達(dá)我的愛
  為什么月亮跟著我們走?
  Hair dressing

論壇熱貼

     
  英語點(diǎn)津開博客,大家覺得怎么樣?
  快快加入“凈臉兩周年特別活動(dòng)”
  給某人留點(diǎn)面子,咋說?
  請(qǐng)教“嗜好”怎么翻譯?
  "a pool report"是不是“聯(lián)合報(bào)道”?
  “走著瞧”可以說go and see 么?。?/a>






主站蜘蛛池模板: 精品一区二区三区免费 | 欧美久久久久久 | 久久99国产亚洲精品观看 | 国产精品1区2区3区 一级电影免费 | 广西美女一级毛片 | 五月婷婷色综合 | 91国色| 久久综合九色综合97欧美 | 日本人视频jizz69页码 | 日韩欧美亚洲一区 | 人人艹逼| 国产日韩欧美亚洲 | 日本wwwwwwwww | 日本三日本三级香港三级 | 日本一区午夜爱爱 | 一区二区三区四区国产 | 九色九色久综色鬼在线 | 欧美成人精品欧美一级乱黄 | 国产日韩精品一区 | 91精品国产综合久久久密闭 | 99精品国产一区二区青青牛奶 | 色婷婷色综合激情国产日韩 | 久久伊人免费视频 | 一区二区不卡在线观看 | 国产中文视频 | 久久综合九色综合欧美播 | 青草视频网站在线观看 | 大吊一区二区 | 日本一本免费一二区 | 久久久久国产一区二区三区 | 欧美日本免费一区二区三区 | 国产目拍亚洲精品区一区 | 蜜臀国产 | 亚洲欧美日本在线观看 | 亚洲欧美综合精品久久成人 | 日本免费在线一区 | 亚洲视频在线观看一区 | 午夜在线亚洲男人午在线 | 久久人人爽人人爽 | 久草免费在线 | 国产精品午夜电影 |