人事无常

human affairs are in constant flux

来信中说到家乡的种种人事变化。

The letter detailed all the changes that had happened back home.

人事材料

personnel materials

人事机密

personnel secret

人事安排

arrangement of personnel

人事经理

personnel manager

人事条例

personnel regulation

人事纠纷

dispute

人事摩擦

social friction

不懂人事

not understand the ways of the world

尽人事

do all that is humanly possible

不省人事

unconscious

她急得人事不知。

She was so worked up she didn't know what was going on.

送点人事

send a small gift