世界節(jié)假日博覽 第113期:世界獻血日

Millions of people are alive today because they received the blood given by another person. June 14 is World Blood Donor Day. This is the day on which we can say thank you to those who give blood. Every country raises awareness of the importance of giving blood. Most blood donors give blood voluntarily, but some countries pay for people to give blood. Doctors say the blood from unpaid donors is generally safer. The blood donation system is pretty much the same all around the world. You give blood and then get a free cup of tea, and perhaps a biscuit. There is a greater need for blood in developing countries. Under 40% of the world’s blood supply comes from the developing world, where 82% of the world’s population live.
通過獻血，數(shù)百萬生命得以挽救。每年的6月14日為世界獻血日。我們要對獻血者說聲謝謝。所有國家都提高了對獻血的重視程度。多數(shù)獻血者自愿獻血，但許多國家為有償獻血。醫(yī)生稱無償獻血者通常較為安全。全球獻血體制幾乎一樣。獻血后，工作人員會給你一杯免費茶，或許還有餅干。在發(fā)展中國家，對于血的需要尤為突出。對于發(fā)展中國家，全球血液供應量不到40%，而卻占據(jù)了全球82%的人口。


Blood is, of course, the red liquid that makes some of us faint when we see it. It delivers oxygen and vital nutrients, such as glucose, amino acids, and fatty acids, to our body's cells. It also carries away waste products, like carbon dioxide, from our cells to keep our body clean. Seven per cent of our body weight is blood. The average adult has about five litres of blood. Our heart pumps blood around our body at high speed. It travels through a system of arteries and veins, that reach every part of our body. Our blood is made up of red blood cells, white blood cells and platelets. When we cut ourselves, it is the job of platelets to clot the blood to stop us bleeding. We all have one of four different blood types. If we are given a different blood type, we’ll die.
有人看見紅色液體（血）會出現(xiàn)眩暈情況。通過血液傳播，氧氣以及像葡萄糖、氨基酸以及脂肪酸等重要營養(yǎng)物可傳遞到細胞中。它還可清除細胞中的廢物，像二氧化碳等廢物可通過血液清除，保持身體清潔干凈。體重的7%為血液。成人平均血液含量為五升。心臟高速運轉(zhuǎn)血液。穿過動脈和靜脈系統(tǒng)流經(jīng)全身。血液由紅細胞、白細胞以及血小板組成。一旦身體被劃破，血小板會幫助凝結(jié)血液，止住流血。人類共有四種血液類型。一旦血液不匹配，死亡情況就會發(fā)生。