人员优化在英文中叫做 "personnel optimization"。来源是管理学和人力资源管理领域，指企业或组织对其人员结构、人员配置和人员管理进行优化，以提高组织效率和绩效。

例句：

We need to implement personnel optimization in order to improve our company's efficiency.
(我们需要实施人员优化，以提高公司的效率。)
The new HR strategy focuses on personnel optimization by streamlining the organizational structure and reallocating resources.
(新的人力资源策略通过简化组织结构和重新配置资源来关注人员优化。)
By carrying out the personnel optimization, it is expected to improve the overall performance of the organization.
(通过进行人员优化，预期将提高组织的整体绩效。)