Unit 5 First aid课文讲解.docVIP

Unit 5 First aid Reading FIRST AID FOR BURNS The skin is an essential part of your body and its largest organ. You have three layers of skin which act as a barrier against disease, poisons and the suns harmful rays. The functions of your skin are also very complex: it keeps you warm or cool; it prevents your body from losing too much water; it is where you feel cold, heat or pain and it gives you your sense of touch. So as you can imagine, if your skin gets burned it can be very serious. First aid is a very important first step in the treatment of bums. 烧伤的急救 皮肤是身体必不可少的部分，也是身体的最大器官。皮肤有三层，它们是防病、防毒、抵御太阳有害光线侵害的一道屏障。皮肤的功能十分复杂。皮肤可以保暖或御寒，保持体内水分。正是皮肤使你感到冷热、疼痛，它还使你有触觉。因此，你可以想象到，如果你的皮肤烧伤了，就可能非常严重。在治疗烧伤的过程中，紧急处理是非常重要的第一步。 Causes of burns You can get burned by a variety of things: hot liquids, steam, fire, radiation (by being close to high heat or fire, etc), the sun, electricity or chemicals. Types of burns There are three types of burns. Burns are called first, second or third degree burns, depending onwhich layers of the skin are burned. ◎ First degree burns These affect only the top layer of the skin. These burns are not serious and should feel better within a day or two. Examples include mild sunburn and burns caused by touching a hot pan, stove or iron for a mordent. ◎ Second degree burns These affect both the top and the second layer of the skin. These bums are serious and take a few weeks to heal. Examples include severe sunburn and bums caused by hot liquids. ◎ Third degree burns These affect all three layers of the skin and any tissue and organs under the skin. Examples include burns caused by electric shocks, burning clothes, or severe petrol fires. These burns cause very severe injuries and the victim must go to hospital at once. 烧伤的原因： 你可能由于各种原因而烧伤：灼热的液体、水蒸气、火、辐射（由于靠近高温或大火）、阳光、电和化学物品。 烧伤的种类： 烧伤有三类。根据皮肤烧伤的层次分为一度烧伤、二度烧伤和三度烧伤。 一度烧伤：只损伤皮层的最上层。这些烧伤并不严重，应当在一两天内就有好转。例如轻度的晒伤，由于短暂接触热锅、火炉或熨斗而导致的烫伤。 二度烧伤：既损伤了皮肤的最上层，又损伤了皮质的第二层。这些烧伤属于严重的