The students trooped into the classroom.

學生們列隊走進教室。

The children trooped into the yard in single file.

孩子們成一路縱隊走進院子。

Everyone trooped into the meeting.

大家三五成群地去參加會議。

People came trooping out of the theatre.

人們成群結隊地走出戲院。

School was over and boys and girls all trooped out of the school.

放學了,學生們都成群結隊地走出校門。