system administrator

例句：

1. 1. As a system administrator, I am responsible for maintaining the security of our company's network.
   作为一名系统管理员，我负责维护我们公司网络的安全。
2. 2.The system administrator needs to ensure that all software updates are applied correctly.
   系统管理员需要确保所有软件更新都正确应用。
3. 3. The new system administrator has been appointed to oversee the implementation of the new software upgrades.
   新任系统管理员已被任命监督新软件升级的实施。