intensity of labour

例句：

1. 1.The intensity of the workload has increased significantly.
   工作量的强度显著增加。
2. 2. The intensity of the labor is high due to the shortage of resources.
   由于资源短缺，劳动强度很高。
3. 3. The intensity of the labor demands more efficient management practices.
   劳动强度要求更有效的管理实践。