concessionary造句
        There are 
concessionary rates for students.
学生享有优惠价。
The principle of openness, impartiality and fairness shall be followed in the granting of 
concessionary right.
授予特许权应当遵循公开 、 公正、公平的原则.
The above are only a limited number of 
concessionary tickets, the public can purchase in advance.
据悉,以上优惠机票均数量有限, 市民可提前购买.