0 If a worker such as a doctor is on call, he or she is available to work or make official visits at any time when needed. -- （醫療從業者的）聽候召喚，待命
1 used to describe workers who are available to make official visits at any time when they are needed -- （工作人員）隨叫隨到的，待命的
an on-call specialist/firefighter/judge 一名待命的專家／消防員／法官
My new job is 20 hours per week, with no on-call work. 我的新工作每週工作20小時，沒有待命任務。
Medical staffs are small, on-call schedules are demanding, and requests to serve on more than one hospital committee are numerous.
Junior doctors have lower basic rate of pay when on-call and provide a pool of low-cost labor.
This can cause a strain on the on-call arrangements of staff in the interventional radiology department.
In addition, approximately 10 per cent of former recipients are employed in the burgeoning temporary work sector - independent contractors, on-call workers and contract company workers.
In all other cases, the patients received a recorded message giving the number of the on-call service, which they then had to call.
From the second year of training onwards, the trainee should be able to participate in the on-call schedules.
Nurses had access to the electronic patient record while providing telephone services, as did the on-call physician who could also access client records from home when the nurse sought consultation.
They will also promote action to improve junior doctors on-call accommodation and out-of-hours catering facilities.
