Some dozen barefooted urchins ganged in from the riverside.

几十个赤足的顽童从河边成群结。

People flocked to hear the new prophet.

人们成群结去听这新的预言家演讲。

People came in flocks to see the new hydraulic power station beside the dam.

人们成群结参观水坝旁边新建的水电站。

Large crowds flocked to the performance.

人们成群结看演。

The miners trooped home.

们成群结回家了。