值班

The man on duty rang an alarm.

员发警报。

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.

那些官员明显不能持，许多人都流泪。

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骚乱。"

Eight are on duty.

八个人在。

Six are on duty.

六个人在。