男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

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





 
Why do we get Goose Bumps when it is cold?
[ 2006-03-29 09:13 ]


Goose bumps are avestigefrom the days when humans wereWhy do we get Goose Bumps when it is cold?covered with hair.

When it's hot and you need to cool down, little muscles at the base of each hair relax. Your hair becomes relaxed. Your sweatglandspump out body heat in sweat. Your blood vessels get big to take more heat to the skin to get rid of it. When it's cold, the arrectormusclepulls the hair up. The duct to the sweat glands gets small toconserveheat. Our blood vessels also get small to save heat.

Hair standing up doesn't make very goodinsulationwe don't have enough fur for that. Humans don't have very much hair on their bodies anymore. Millions of years ago, humans probably did. And that hair standing on end helped keep people warmer. Those little muscles we have on the end of each hair still work. They still make goose bumps.

Cold is not the only thing that can cause our hair to stand on end. Fear or anger can cause the samereflex. The same is true for other mammals. You'll notice that on a cat or dog. Their fur gets bigger when they're angry or afraid.

vestige: 殘余,痕跡

 

 

gland:腺

 

muscle:立毛肌

conserve:貯藏



insulation:隔熱

 

 


reflex:反應

中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
相關文章 Related Story
 
 
 
本頻道最新推薦
 
The Week: June 25, 2010
索尼無頭公雞廣告嘲笑法國隊世界杯出局
畢業時常用口語
港首“普選” universal suffrage
你是否也曾“機械進食”
翻吧推薦
 
論壇熱貼
 
原來國家的名字如此浪漫
Funny lines about getting married
關于工資的英語詞匯大全
關于職業裝的英語詞匯
余光中《尺素寸心》(節選)譯

 

主站蜘蛛池模板: 云霄县| 淳化县| 长海县| 安吉县| 赣榆县| 丰宁| 铁岭市| 卢氏县| 沙雅县| 葫芦岛市| 噶尔县| 玛多县| 武清区| 酒泉市| 长阳| 万盛区| 孝感市| 诏安县| 临海市| 博兴县| 邹城市| 青州市| 峨边| 万山特区| 河间市| 十堰市| 平江县| 福贡县| 永兴县| 屯留县| 广水市| 白河县| 阳江市| 名山县| 石楼县| 修武县| 揭东县| 仁寿县| 手机| 大兴区| 兴隆县|