area code是什么意思

双语用例

• Two healthy controls were sought for each patient : using sequential digit dialing within area code and prefix, controls were matched by age and place of residence.

• The length of the area code for landlines is either 2 or 3 digits, depending on the population density of the area.

• Area code 405 was one of the original area codes put into service in 1947.

• In 1953, the southwestern part of the state became area code 813, while 305 continued to serve the rest of the state.

• To convert an old number, change the area code to 071 and prefix the old 5-digit local number with 98.

• Dialing from mobile phones to any type of phone except 010 numbers, the area code must be included.

• The region directly bordered 612 (to the north) until that area code was divided up in the 1990s.

• The 876 area code was created during a split from the original 809 area code.