backup service短语¹⁵⁸²⁵ 基本例句 图书馆后援服务 If people want to back up their laptop, the company recommends that employees purchase their own USB hard drive, or buy a subscription to an online backup service. 如果员工想备份上面的数据，公司建议他们自己用 USB接口移动硬盘、或租用网上硬盘进行备份。 bimcad