national labor turnover

例句：

1. 1. The national labor turnover rate has been increasing due to the economic growth.
   由于经济增长，全国劳动力流动率一直在上升。
2. 2. This study aims to analyze the national labor turnover rate in different regions.
   这项研究旨在分析不同地区的全国劳动力流动率。
3. 3. The national labor turnover rate is an important indicator of a country's economic health.
   全国劳动力流动率是衡量一个国家经济健康状况的一个重要指标。