preferential
adj. 优先的，优待的，优惠的；（投票，选举）表明选择顺序的；（债权人）要求债务人优先偿还的
例句
Offering preferential treatment to wealthy countries.
向富裕国家提供优惠待遇。
Japan will remove five countries from a preferential framework in light of their economic development.
鉴于五个国家的经济发展情况，日本将把它们从优惠框架中剔除。
The government encourages this practice, and provides many preferential policies and facilitation measures for college students.
政府鼓励这种做法，并为大学生提供了许多优惠政策和便利措施。
