值班

The man on duty rang an alarm.

员发出警报。

He was to keep watch in the lighthouse.

该他到灯塔上。

There is a nurse in attendance.

有一位护士。

In addition to these arrangements, extra ambulances will be on duty until midnight.

除了这些安排以外，还增派救护车到午夜。

The officers on duty were visibly overcome, many of them in tears.

那些的官员明显不能持，许多都流出了眼泪。

The patrol police on duty are on the alert against any possible disturbances.

"巡警处于戒备状态,随时准备应付任何可能发生的骚乱。"

Eight are on duty.

八。

Six are on duty.

六。