严冬保暖四步走(1/2)
概述：严寒天气有可能造成冻疮和体温过低，给身体造成损害。避免这些损害需要采取适宜的预防措施。Hints:
frostbite
hypothermia
gangrene
校对： ciciwonder
翻译&注解： annmar
组长： zpdslshhz
答疑： fwlclover
发音点评： cherryxyr
本期材料发音模仿地址：http://bulo.hujiang.com/menu/11885/item/713461/http://t1.g.hjfile.cn/listen/201212/201212290633456715554.mp3Freezing weather can mean frostbite and hypothermia unless a person is prepared. Today we talk about how to stay warm, dry and safe.
Frostbite is damage that happens when skin is exposed to extreme cold for too long. It mainly happens on the hands, feet, nose and ears.
People with minor cases of frostbite that affect only the skin may not suffer any permanent damage. But if deeper tissue is affected, a person is likely to feel pain every time the area gets cold.
If blood vessels are damaged, people can suffer a gangrene infection. Sometimes the only way doctors can treat an injury like this is to remove frostbitten areas like fingers and toes.
Hypothermia is a condition that develops when the body cannot produce as much heat as it releases. Signs of hypothermia include uncontrollable shaking, very slow breathing and difficulty thinking clearly. Hypothermia can lead to death if the person does not receive help.君若不曾防寒于未然，刺骨的严寒将让你遍尝冻伤和低体温症之苦。今天我们谈谈如何保暖防潮，确保安全过冬。
冻伤是当皮肤长时间暴露于极寒环境中而造成的损伤，多发于手、足、耳、鼻等易露部位。
皮肤上的轻微冻伤并不一定会留下永久性损伤，而一旦深层组织受损，每次遇冷时患处便很可能旧伤复发，倍感疼痛。
如果血管冻伤，患者还可能要遭受坏疽感染的痛苦，有时医生处理这类损伤的唯一办法就是截除冻伤的部位，比如手指和脚趾。
低体温症是当人体产热小于散热而引发的一种疾病，常有无法控制的颤抖、呼吸异常缓慢和思维障碍等症状。若不及时救治，患者会因体温过低而死亡。
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