These are the folks who are joining the gangs in inner cities and swelling the ranks of the rural military gangs.

这些人正是那些参加老城区流氓帮派以及使乡村武装匪帮队伍扩大起来的人。

Large numbers of refugees have swollen the ranks of the unemployed.

【swell】大量的难民壮大了失业人口的队伍。

We are looking for more volunteers to swell the ranks of those already helping.

我们期盼有更多的志愿者加入，壮大已有援助队伍。