N-UNCOUNT
(手机)漫游
Roaming refers to the service provided by a mobile phone company which makes it possible for you to use your mobile phone when you travel abroad.
例句
International Roaming is your digital mobile phone's passport to travel but the cost of calls is high.
国际漫游服务可使数字手机在全球畅通无阻，但话费却很高。