勤工俭学 work-study program ; part-work and part-study system ; PT Jobs ; Part-time Job

后勤工作机制 logistics mechanisms

工勤技能人员 Ground Skilled Staff

工勤人员 Logistics Workers

工作勤奋 work like a Trojan ; Hard working ; work hard ; Hardworking and good learning ability

辛勤工作 break one' s back ; work like a horse ; work hard

勤奋工作 hard work ; roust ; TO WORK HARD ; work like a horse

勤杂工 office boy ; Factotum ; RO-OA ; Houseman