900 number
noun/ˌnaɪn ˈhʌndrəd nʌmbə(r)/
/ˌnaɪn ˈhʌndrəd nʌmbər/
- (in the US) a phone number that begins with 900. A call to it is more expensive than those to ordinary numbers, and part of the charge for the call goes to the business being called. 900 numbers are used by companies who have chatlines, operate competitions, offer services, etc.
900号码：以900开头的电话号码。拨打该电话的电话要比拨打普通电话的电话贵，并且电话的部分费用归给被叫业务。有聊天热线，进行比赛，提供服务等的公司使用900个号码。