In the Middle of the Night

In the middle of the night, some people are busy.

在午夜，一些人很忙。

The nurses take care of patients.

护士照顾病人。

The police officers patrol the streets.

警察在街上巡逻。

The truck drivers deliver boxes.

卡车司机运送箱子。

The pilots fly airplanes.

飞行员驾驶飞机。

The printers print newspapers.

打印机打印报纸。