护照是我们出国时必不可少的重要文件。护照有多强，不仅仅反映我们出国旅游有多方便，更代表一个国家的整体实力和自由度. . .
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Insights behind passport rankings
A passport is an important document that we must have when we travel abroad. The strength of a passport not only reflects how convenient it is for us to travel abroad, but also represents the overall strength and freedom of a country.
