This article will explain about it and how to stay young by this knowledge.

本文将解释它，以及如何保持年轻的这方面的知识。

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In this perfect world lived people who had discovered how to stay young forever.

在这个完美世界里居住着的人们发现了永葆青春的秘密。

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“It gives young people confidence and the fundamentals of how to stay safe, ” he said.

他说：“该计划让青少年对如何自保充满信心，也懂得了自保的基本原理。”

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Jim Gamble, head of the Child Exploitation and Online Protection Centre (CEOP), said young people must learn how to stay safe on the web.

BBC: Children at risk of web predators