见到10条零散的信息不如看到3条信息-一一个3位数区号,3位数的称谓与一个4位数的号码。
Instead of seeing 10 separate pieces of information, we see 3 pieces of information - a 3 digit area code, a 3 digit prefix, and a 4 digit number.
加拿大的手机号码可能是世界上最短的:使用7位数字。
Canada's mobile phone numbers are perhaps the world's shortest: they use seven digits.
在中国,我们能从手机号码的第四位数到第七位数知道些什么?
What can we know from the fourth to the seventh digits of a mobile phone number in China?
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