There are a number of subtags that can be used, but in many instances the language code and region (country) code should be sufficient.

有许多可供能使用的子标签。 但在许多情况中语言代码和地区（国家）代码应该足够了。

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You can imagine a similar algorithm for an international number with a country code.

您可以想象到通过类似的算法根据国家代码识别国际电话号码。

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Please write down the country code, the area code and their number.

请写下国家代号、区号和对方的号码。

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These were not GPS coordinates, but rather full addresses: door number, street, town, zip code, and country.

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