area code
noun [ C ] US uk/ˈeə.ri.ə ˌkəʊd/ us/ˈer.i.ə ˌkoʊd/ (UK dialling code)
区号
a series of numbers used before the main phone number when you phone someone outside your own town or area
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。