zhè / xiàng / fú / wù / zhuān / mén / bāng / zhù / yín / fà / zú / xué / xí / shǐ / yòng / zhì / néng / shǒu / jī

这项服务专门帮助银发族学习使用智能手机。

This service is designed to help older people learn to use smartphones.