1. He is our monitor.
    他是我们的班长.

2. Liu Yang is our monitor and he is from Shanghai.
    刘扬是我们的班长，他是上海人。

3. Frequent computer analyses could tell whether workers, like air traffic controllers, are seeing all activity clearly enough to monitor it properly.
    采用频繁的电脑分析，能够了解到工作人员，如飞行调度员，是否对工作全局一目了然，从而做好各自的工作。

4. For example, Germany has 600 sites that monitor carbon monoxide.
    例如，德国就有600个站点监控一氧化碳的排放量。