人体的十大奇异特征(上)
Have a New Stomach Lining Every 3 to 4 Days!
10.每3至4天就会产生新的胃粘膜Your stomach is something of a marvel of engineering, taking in the food you eat and breaking it down into its components parts (minerals, proteins and so forth) before sending all these nutrients off around the body to where they can do the most good. The stomach lining has many purposes, the most important of which are to help with the digestive process (by secreting the substances needed to break down the food) and to protect the rest of the body from the highly acidic environment inside the stomach. We all know that feeling of being too full, but few of us understand that this stretching is possible thanks to the folded and almost pleated surface of the stomach lining. These wrinkles are called rugal folds. If the lining was not under almost constant maintenance and renewal, it would not take long for the structure of the lining to begin to break down and for the super-strong acids to begin to digest it!
人类的胃简直是工程学上的奇迹——它吸收人们吃的食物，并将其分解成所需成分（如矿物质、蛋白质等等），然后将这些营养物质输送到人体各个部分使其发挥最大作用。胃粘膜有许多用途，其中最重要的就是帮助实现食物的消化（悄悄分泌分解食物所需的物质）和保护身体的其他部位免受胃部强酸性环境的侵蚀。我们都知道吃撑了的感觉，但是很少人知道这种撑的感觉是原本带有褶皱的粘膜层在胃被食物充满后褶皱变为低平或者消失的缘故。这些褶皱被称为“皱襞”。如果胃粘膜没有时常进行自我维护与更新，在胃酸的腐蚀下，胃壁的各层结构都会很快崩塌。
Nose?
9.灵敏的鼻子
While we all know that dogs have incredibly sharp noses, it is not so well-known that we humans are not so bad at sniffing things out ourselves! The human nose can identify or recognise about 50,000 different smells. Interestingly, women tend to be better smellers than men, with scientific studies showing that women could actually identify differences between the smell of the sweat of healthy people and those suffering from cancer. Scientists have also found that the left nostril tends to be better at picking up stray scents than the right-hand-side one!
大家都知道狗鼻子异常灵敏，却不知道其实人类的也不差。人类的鼻子可以识别约50000种不同的气味。有趣的是，女性在这方面甚至比男性更胜一筹，科学研究表明女性可以准确辨识健康人群的汗味跟罹患癌症的病人的汗味。科学家们也发现左鼻孔辨识气味的能力要比右鼻孔强！Crawlers
8.皮肤上的细菌
Every square inch of your skin has 32 million bacteria on it, right now! Okay, stop scratching or planning to rush off for a boiling hot disinfectant bath; it is completely normal and – fortunately – most of them are harmless or even necessary for our continued good health!
就在此时此刻，你皮肤上的每平方英寸就有3200万个细菌！哎，千万别想着用手挠，也别想着用滚烫的洗澡水给自己消毒。人的皮肤上有这么多细菌是很正常的，而且值得庆幸的是，在这些细菌中，大多数都是无害的，有的甚至是我们保持健康所必需的！uctive Feet
7.汗腺发达的脚丫子
Your feet alone have 500,000 sweat glands on then and can produce up to a pint of sweat per day! This is why many feet find food odour to be a problem, especially when their feet are hot and confined to waterproof shoes for long periods of time. However, it is not the sweat that creates that pungent and cheesy smell – that comes from those millions of bacteria on your skin interacting with the sweat! If foot odour is a problem for you try sprinkling a teaspoonful or so of bicarbonate of soda (straight-forward baking powder) inside your shoes. The powder will absorb and neutralise the smell, sparing your blushes when you ease your shoes off under your desk.
光是你的一只脚上就有50万个汗腺，它们每天可以分泌一斤汗液！这就是脚臭的原因，特别是当天气热、脚又长期处于不透气的防水鞋里时，这个问题尤为明显。不过汗液并不是产生这种刺鼻气味的原因，真正的原因是你皮肤上数以万计的细菌与汗液的相互作用。如果你有脚臭的困扰，可以试着往你的鞋里倒一茶匙左右的小苏打（发酵粉）。小苏打可以吸收和中和脚臭，这样你在桌子下面脱鞋的时候，就不会那么尴尬了。Are Made of 7,000,000,000,000,000 Atoms!
6.你由7,000,000,000,000,000个原子组成
That is 7 quadrillion in US terms or 7 thousand billion in old UK terms (a billion has shrunk over the years, mysteriously dropping three zeroes from 1,000,000,000,000 (12 noughts) to 1,000,000,000 (9 noughts – one wonders if the Treasury noticed when this happened!). Figures this large are simply too big for us to comprehend (it would take more than your lifetime, your child's lifetime and even your grandchild's lifetime to count even a fraction of your atoms (assuming you could see them easily enough!) and it seems incredible that humans, seemingly so solid and large, are in fact made up of tiny, tiny pieces of matter in this way!
按照美国标准，这这一数字表示七万亿；然而按照原来的英国标准，它表示7000个十亿。随着时代的进步，一亿的大小已经萎缩，从原来的1,000,000,000,000（12个0）到现在的1,000,000,000（9个0），神秘地丢掉了三个零。一定有人好奇，不知财政部是否注意到这一点。如此巨大的天文数字可能很难理解，即使你可以轻易辨别每个原子，你也很难在你的有生之年数清你身体某一部分的原子个数，或许加上你孩子和孙子的一生也不够。同时，你也很难相信看上去如此坚固和强大的人类，是由如此微小的组成的。审校：晃晃 编辑：Candy 来源：前十网
