thin-out

例句：

1. 1. The company is thinning out its workforce due to layoffs.
   由于裁员，公司正在缩减员工队伍。
2. 2.The population is thinning out as the young are moving away from rural areas.
   随着年轻人离开农村地区，人口正在减少。
3. 3.The government has thinned out the ranks of its security forces.
   政府已经减少了安全部队的人数。