阁下之国际漫游服务已启动。
国际漫游服务，你可能是另一个要考虑的。
International roaming is another service that you might want to take into account.
他谈论的是国际漫游服务——手机用户在国外旅游时拨打和接收电话。
He is talking about international roaming-calls placed and received by subscribers when travelling abroad.
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