premium rate number/line/servicea telephone connection to a particular service or company that costs a lot more than the usual rate when you call it because the company you are calling takes some of the money that you pay 加费电话号码/线路/服务〔这种电话的费用比正常高得多，因为服务提供者收取部分附加的费用〕 → premium rate number/line/service at premium rate(1)