if a job or position is unfilled, nobody has been chosen for it (职位)空缺的 There are thousands of unfilled vacancies in the nation's schools. 这个国家的学校有成千上万个空缺。
- (especially North American English)
if an order for goods is unfilled, the goods have not been supplied (订单)未交货的 There is a backlog of unfilled orders to deal with. 有积压的未完成订单要处理。
if a break in a conversation is unfilled, nobody speaks (谈话中)停顿的