on-call hours
值班时间
be on-call
值班
on-call duty
值班任务
on-call staff
值班人员
on-call doctor
值班医生
being on-call
值班中
on-call rotation
轮值
always on-call
总是值班
on-call availability
值班可用性
on-call system
值班系统
on-call hours
值班时间
be on-call
值班
on-call duty
值班任务
on-call staff
值班人员
on-call doctor
值班医生
being on-call
值班中
on-call rotation
轮值
always on-call
总是值班
on-call availability
值班可用性
on-call system
值班系统
探索常用高频词汇