阅读下面的短文,将短文中画线部分的句子译成中文。
Many children use the Internet to get useful knowledge and information.and to relax in
their free time.But some of them are not usingitin a good way.Here are some rules
to make sure you are safe and have fun on the Internet.
Make rules for Internet use with your parents.For example,when you can go online,
for how long and what activities you can go online.
Check with your parents before giving out a credit(信用)card number.
Never send a photo of yourself to someone in e-mail unless your parents say itˈs OK.Never meet anyone you met online alone.