on-line help的用法和样例：
例句
- You'll have the option to search both offline and online Help for the latest topics and procedures.
您可以在脱机和联机帮助中搜索最新的主题和过程。 - In addition, because of its friendly graphic interface and detailed online help mechanism, this system can be proficiently operated and used by users.
另外，系统具有良好的图形用户界面，操作简单，并提供大量的联机帮助，帮助用户快速掌握系统的使用。
