日常生活中的科学冷知识
来源：网络 作者：网络
1. One eye blink needs movement of about 200 muscles
一个眼睛眨动需要牵动约200个肌肉
2. Every drop of blood in your body is filtered over 300 times in a day
身体里每滴血每天都要被过滤超过300次
3. 20 minutes a day outside in a good weather boosts good mood, broadens thinking and improves productivity
天气好时一天在户外20分钟能愉悦心情、拓宽思路并提高工作效率
4. Happiness is maximized at 13.9 degrees Celsius
快乐会在13.9摄氏度时最大化
5. Surface area of a human lung is equal to a tennis court
人一个肺部的表面积相当于一个网球场
6. It is impossible to tickle yourself.
胳肢自己是不可能的
7. Olfactory system ( cortex and neurons responsible for interpreting odours) can remember smell of almost 50000 different scents
嗅觉系统（负责解读气味的皮层和神经元）能记住约50000种不同气味。
8. Acid in our stomach can dissolve Razor blades
我们的胃酸能溶解剃须刀片。
9. Tooth is the only part of the body that can't repair itself.
牙齿是身体唯一不能自我修复的部分。
