Maybe you carry the most powerful passport in the world, or perhaps the rarest passport.

也许你的护照是世界上最强大的，也许是最稀有的!4X&!E0CVR。

Whatever the case, your passport will likely be one of four colors: red, blue,green or black, although there are slight variations.

无论如何，你的护照可能是四种颜色中的一种:红、蓝、绿或黑，虽然可能有细微的变化C.=[viVOMd#*YdWbz6F。

Switzerland's passport is dark red, for example, while most European countries prefer a shade of red. That's almost brown.

例如，瑞士的护照是深红色的，而大多数欧洲国家更喜欢接近棕色的红色&JkSrY@#AzP_zK@。

There are no official rules regarding passport colors, but countries follow a certain set of norms when designing them.

护照的颜色没有官方规定，但各国在设计护照时都遵循一定的标准#EzwSjkww|I^25r(NL。

The International Civil Aviation Organization, which works to define the principles of air travel, suggests that countries use a suitable type, size and style for official documents like passports.

国际民用航空组织(International Civil Aviation Organization)致力于定义航空旅行的原则，该组织建议各国对护照等官方文件使用合适的类型、大小和风格-qpY~ZtTe-C.X|z。

There are also a few compulsory aspects of passports. They must be made from a material that bends.

护照也有一些强制性的要求OSu26rJ[sNi。它们必须由能弯曲的材料制成h%Yba5[]%jK,。

They should be able to be read by a machine at temperatures ranging from 10 degrees Celsius to 50 degrees Celsius, under the conditions where the air can be extremely dry or moist.

它们应该能够承受10摄氏度到50摄氏度的温度，在空气极其干燥或潮湿的条件下可以被机器读取3,_.x3N7wOb。

Despite these existing recommendations, there is nothing regarding the cover color. Why?

尽管已有这些建议，但没有任何关于封面颜色的建议e37@ko.64bf838_lR[。为什么?

Simply put, countries stick to darker and more conservative colors because they appear more official. And they can also hide dirt and wear.

简单地说，国家坚持使用更暗、更保守的颜色，因为它们看起来更正式U)rTnunu~_GE7I。

While there's little innovation when it comes to passport cover color, the same cannot be said for the pages.

它们还可以隐藏污垢和磨损)#)((_1513b_o##Y。虽然护照在封面上的颜色没有什么创新，但页面上就不一样了S7d|AAqhs&Wzuno。

The passports of many countries can take images of their well-known geographical features and wildlife, which also function as security features as some are only visible under a special light.

许多国家的护照照片可以是他们著名的地理特征和野生动物，这些照片也可作为安全特征，因为有些只有在特殊的光线下才能看到dd37d77gh.E。

Questions 22 to 25 are based on the passage you have just heard.

请根据你刚刚听到的文章回答问题22到问题25@jEBpSxZ9Y。

Question 22: What do we learn about most European passports?

问题22：关于大多数欧洲护照，我们知道了什么?

Question 23: What does the passage say about the design of passports?

问题23：关于护照设计，文章说了什么?

Question 24: Why are dark colors chosen for passport covers?

问题24：为什么护照封面选择深色?

Question 25: What is one special function of the images inside many passports?

问题25：许多护照内的图像有什么特殊功能?