Working with local geologists and engineers, the experts have studied the nature of the ground and the type of most practical building code for the local area.

通过与当地地质学家和工程师合作，专家们研究了当地土地的性质和最实用的建筑规范类型。

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In North America it starts with three Numbers called the area code, followed by seven digits split into sections of three and four, which is the local number.

在北美，该号码的开头为3个数字，称为区号，然后是7个数字，分为两部分，一部分3个数字，一部分4个数字，这是本地号码。

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So Nynex, hardly the most popular local telephone company in America, knew it was in for a scrap when it recently unveiled a plan to deprive some Manhattanites of their treasured 212 area code--arguably the only local telephone code that is recognised from Tokyo to Tomsk.

ECONOMIST: The sexiest code on earth

On that Web site people can enter their zip code and find opportunities to volunteer in their area or local charities to which they can donate.

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