通过付费激活使用“护照”功能后，这款应用将自动匹配旅客和其他城市的用户。

Using a feature called Passport, which subscribers pay for, the phone application allows tourists to meet and match with users in other cities.

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两个护照，三个城市，两个国家，有一天。

Two passports, three cities, two countries, one day.

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今年年底，做为12个中国城市之一，北京将首批推出数字护照。

Beijing will be one of the first 12 cities in China to launch a digital passport program by the end of this year.

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