Quora精选：超级有趣但是鲜为人知的冷知识

1) The pleasant smell of first rain after a long time (called petrichor) is actually due to geosmin produced by bacteria present in wet soil. It is also attributed to an oil released by plants to keep themselves from drying out.

久旱初雨后空气中的馨香（叫作“潮土油”），实际上源于潮湿泥土中细菌所产生的土臭素，也来自于植物为避免干枯而分泌的一种油脂。

2) If you survive a lightning strike, you get a special scar:

如果你在雷击中幸存下来，你身上会留下一道特殊的疤痕：

It's called "Lichtenberg figure".

它叫做“利希腾贝格图形”。

3) G-Mail was originally a free email service for Garfield fans!

G-Mail最初是为加菲猫粉丝们提供免费电子邮件服务的！

The domain name "gmail.com" was originally used by Garfield.com to reply to fans of the comic strip “Garfield”. In June of 2005 Google bought the URL from Garfield’s website.

“gmail.com”这个域名本来是加菲猫官网（Garfield.com）用来给《加菲猫》连环画粉丝回信的。2005年6月，谷歌从加菲猫那里收购了这个网址。

4) In most of the malls today, perfumes are always found at the entrance. There's a reason behind this:

现在大多数购物中心的香水柜台都设在入口处。这背后是有原因的：

Before automobile came in, commuters used to depend on horses, which used to leave lots of dung on the roads. Just to ensure the stench/bad odor would not enter the sales outlet, perfumes and fragrances were always kept at the entrance. This was done so that the customers would have a pleasant experience the moment they step in.

在汽车普及之前，马匹是主要的代步工具。但是马一路会留下许多粪便。为了确保这种异味不被带入，店铺入口处常会放香水。这样顾客一踏入店门就会感觉愉悦。

5) A honey bee must tap two million flowers to make one pound of honey.

一只蜜蜂需要采两百万朵花才能酿出一磅蜂蜜。

6) If a statue of a person on a horse has both front legs in the air, the person died in battle; if the horse has one front leg in the air, the person died as a result of wounds received in battle; if the horse has all four legs on the ground, the person died of natural causes.

一尊骑马雕像，如果马的一双前蹄腾空，那么此人战死沙场；如果马一只前蹄腾空，那么此人伤重而亡；如果马四脚着地，那么他寿终正寝。

7) Honey is the only food that doesn't spoil. It was found in an edible form even in the Pyramids. When you call someone “honey”, you are blessing them with a long life.

蜂蜜是唯一一种不会变质的食物。甚至在金字塔中发现的蜂蜜都还可以食用。当你叫别人“honey”（蜂蜜，亲爱的）时，你是在祝福他们长命百岁。

8) Only one McDonald's in the world has turquoise arches. This is in Sedona, Arizona. The Government officials thought the yellow would look bad with the natural red rock of the city.

全世界只有一家麦当劳的“M”标志是蓝绿色的。这家店位于亚利桑那州的赛多纳市。当地政府觉得，麦当劳标志上的黄色和当地的天然红色岩石搭配起来丑爆了。

9) Potato chips were invented in Saratoga Springs in 1853 by chef George Crum as a mocking response to a patron who complained that his French fries were too thick.

薯片是由一位住在萨拉托加斯普林斯，名叫乔治·克拉姆的厨师在1853年发明的，以此嘲笑一个抱怨他薯条做太厚的顾客。

10) Otters holds hands whilst sleeping so they do not drift away from one another.

水獭睡觉的时候会手牵着手，以防被水冲散。

This is a great example of common sense applied in the animal kingdom to maximise the likelihood of survival and it also happens to be a fascinating and cute thing to observe.

这是在动物王国，利用常识来最大限度谋求生存的典型例子，恰好看上去也萌死了。