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。
He can reach me at my office any time tomorrow. My number is country code 61, area code 3, number 2775-2940.
明天任何时间他都可以打电话到我办公室找我。我的电话是国家号61，区号3，电话号码2775- 2940。
He can reach me at my office any time tomorrow. My number is country code 61, area code 3, number 2775-2940.
明天任何时间他都可以打电话到我办公室找我。我的电话是国家号61，区号3，电话号码2775- 2940。
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