当你完成工作时，记得从电脑上注销。

Always remember to ___log ___off from your computer when you finish work.

出于安全原因，你应该在公共电脑上注销所有账户。

For security reasons, you should ___log ___out of all accounts on public computers.

系统将在30分钟不活动后自动将你注销。

The system will automatically ___log you ___out after 30 minutes of inactivity.