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。

youdao

That's one month when there are some Carling Cup and FA Cup games, so I don't think it is a period with seven Premiership matches. I think it will be three, maximum four league games.

在这个月里会有许多联赛杯和足总杯的比赛，而且我认为那还不是一个月踢7场联赛的时候，可能会有三场，最多四场联赛。

youdao

The crisis at the Fukushima Daiichi complex now threatens three of six reactors and four of seven pools in which nuclear waste is stored.

WSJ: GE Steps Up Aid in Reactor Crisis