area code

1. N-COUNT The area code for a particular place is the series of numbers that you have to dial before someone's personal number if you are making a telephone call to that place from a different area. (電話(huà)) 區(qū)域代碼[美國(guó)英語(yǔ)]

The area code for western Pennsylvania is 412. 西賓夕法尼亞的區(qū)號(hào)是412。