尽管虚拟桌面需要网络连接才能工作，但是这种战略在安全性、可移动性和数据完整性方面具有很强的优势。

While virtual desktops require network connectivity to function, you cannot overlook the security, mobility, and data integrity benefits of such a strategy.

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然而，非洲卫生工作组发现，真正能留住卫生工作者的因素往往是装备的改善、安全的居住环境和培训的可及性。

Yet the Africa Health Workforce team found that it was often improved equipment, safe housing, and access to training that motivated workers to stay.

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其最新的安全方案为一种数码密钥卡，可同客户的帐户相连，其密码每30秒自动更换。

Its latest security initiative is a digital key fob, linked to customers' accounts, whose security code changes every 30 seconds.

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