principle of last-in first-service后到先做原则
In-Flight Service飞机上餐点服务;机上餐点服务;机上服务;飞机上的服务
in-service transfer在职转任;内部转任
in-service educator在职教育工作者
in-service register寄存器
in-service traiing在职训练
in - service education在职教育
in-service job紧急修理;临时修理
in-service learners在职人员
ADJ（形容词） If people working in a particular profession are given in-service training, they attend special courses to improve their skills or to learn about new developments in their field. 在职期间进行的 [ADJ n]
...in-service courses for people such as doctors, teachers, and civil servants.
…针对医生、教师和公务员等的在职学习课程。