这项研究假设假如两地居民使用电话通话次数越多、时间越长，那么这两地属于同一地区的可能性就越大。
The study's hypothesis was that the more and the longer people in two locations talk on the telephone, the more the places belong to the same region.
申办我们的长途电话方案即可享有三个月无限次数的通话！
Sign up for our long distance plan and receive unlimited calling for three months!
申办我们的长途电话方案即可享有三个月无限次数的通话！
Sign up for our long distance plan and receive unlimited calling for three months!
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