Translation of "crowds" into Chinese

Soon I began running with a crowd of much older friends.

不久,我开始混上了一伙年纪比我大的朋友。

We lost sight of the man in the crowd.

在人群中,我们失去了那个男人的踪影。

The crowd obstructed the police in the discharge of their duties.

群众妨碍了警员执行任务。