user log off的用法和样例：
- This data loss will occur the next time the user logs off.
- The SSL VPN needs to ensure that after the user logs off (or is timed out) their access credentials are wiped from the browser machine.
- The database is shut down cleanly and its resources are freed after the last user logs off.
- This parameter specifies how much of the cache is cleared when the user logs off.
- The User Profile Hive Cleanup service helps to ensure user sessions are completely terminated when a user logs off.
User Profile Hive Cleanup服务可帮助确保在用户注销时彻底终止用户会话。
- Another person who wants to access the product must wait until the current user logs off.