concessionary
adjective uk/kənˈseʃ.ən.ər.i/ us/kənˈseʃ.ən.er.i/
(对学生、老少或失业人群的)价格优惠的,减价的
offered at a lower price than usual for certain people, for example students or old people
a concessionary fare/ticket 优惠票价/票
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