劍橋詞典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 relating to the work of someone who is available at any time when needed （工作）需要所叫隨到的，隨時(shí)待命的 My new job is 20 hours per week , with no on-call work . 我的新工作每周工作20小時(shí)，沒有待命任務(wù)。 返回 on-call