我不知道他是这星期的纠察队。

I didn't know he was the proctor this week.

他们向工厂前进，并组成了纠察队。

They marched to the factory and formed a picket.

罢工的工人在工厂附近设置了纠察队。

Striking workers picketed the factory.

已成立合适的消防保护系统或防火纠察队。

Appropriate fire protection systems or fire watch established.