名词
中文翻译：Unknown
同义词：
['guardian', 'watchman', 'overseer']
例句：
-
2.
在计算机网络中
-
3.
在体育比赛中
-
1.The security guard was keeping an eye on the entrance.
保安正在注意入口。
-
2. The computer network has a monitor installed to keep track of all activity.
计算机网络安装了监控设备，以跟踪所有活动。
-
3. The referee made sure everyone was following the rules during the game.
裁判确保比赛期间每个人都遵守规则。