美国的电话号码共有十位数字,前三位数是“区号”(code),后七位数为电话号码(Telephone number)。如:6265551212,626是区号,5551212是电话号码。美国同一个城市的区号可能会有所不同。拨打相同区号的电话时直接拨电话号码即可,不需拨区号;拨打不同区号的电话时,不论是否在同一城市,必须在前面先拨1,再加区号及电话号码。 The U.S. phone number has ten digits, the first three digits are “code” and the last seven digits are the telephone number. Such as: 6265551212,626 is the area code, 555,1212 is the telephone number. The area code for the same city in the United States may vary. Dial the phone number of the same area code directly dial the phone number, do not need to dial the area code; dial a different area code phone, whether in the same city or not, you must dial 1 in front, plus area code and phone number.