/ˌprefəˈrenʃl ||; ˌprɛfəˈrɛnʃəl/adj (only before a noun 只用于名词前) giving or showing special treatment to one person or group rather than to others 优先的；优待的；优惠的: I don't see why he should get preferential treatment -- I've worked here just as long as he has! 我不明白为什么他应该得到优待─我和他在这里一样工作了那么久！