Abstract The characteristic services work under the network environment is a focal point of research in public library circles. 网络环境下公共图书馆特色服务工作，是目前公共图书馆界研究热点之一。
Yiyo is a service system especially designed for roamming users, including phone number booking and other special services, such as weather forcast and language translation. 易游系统是一个专门为漫游用户设计的服务系统，包括订阅号码和其他特色服务如天气预报，语言翻译等。
