I decided to install a security system to prevent any break-ins. 我决定安装一个安全系统来防止任何闯入。
User authentication is one part of a security system for protecting your data. 用户鉴定是保护数据的安全系统的一部分。
And it is saddled with unfunded pensions from the pre-reform era, when industrial workers enjoyed a cradle-to-grave security system. 改革前，中国工业工人享受的是终身保障机制，而没有建立退休金保险系统。
A key Senate Committee has approved a sweeping remake of the country's health care system,delivering a long -sought boost to President Obama's goal of expanding coverage. 一个关键的参议院委员会已经批准了一项国家医疗保险系统的彻底改造，兑现奥巴马长期追求的扩大覆盖范围的目标。
