I was five years old and the public internet was only three years old.

我五岁，公共互联网只有三岁。

Since that time, hundreds of public wireless internet, or Wi-Fi, connection points have opened in parks and open areas around the country.

从那时起，全国各地的公园和开放地区都开通了数以百计的公共无线网络或Wi-Fi连接点。

Epoch AI, a research outfit, estimates the well of high-quality textual data on the public internet will run dry by 2026.

研究机构 Epoch AI 估计，到 2026 年，公共互联网上的高质量文本数据将会枯竭。

What’s needed is a way for a server to send a secret key over the public internet to a user wishing to connect securely.

所需要的是服务器通过公共互联网向希望安全连接的用户发送密钥的方法。