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1.PPTP stands for Personal Title Protection Plan, which is a type of insurance that protects against identity theft.
PPTP代表个人标题保护计划，这是一种保险类型，用于保护免受身份盗窃。
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2.Many people use PPTP to secure their online privacy and security when accessing public Wi-Fi networks.
许多人使用PPTP来确保他们在访问公共Wi-Fi网络时的安全和隐私。
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3. The PPTP protocol provides a secure way to share sensitive information over a network without compromising on privacy.
PPTP协议提供了一个在网络中安全共享敏感信息而不牺牲隐私的方式。