senior
美 [ˈsinjər]英 [ˈsiːniə(r)]
        - adj.大;级别(或地位)高的;成人的;高级水平的
 - n.上级;上司;较…年长的人;级别(或地位)较高者
 
复数:seniors
seniorsenior
级别高of high rank
1.~ (to sb)级别(或地位)高的high in rank or status; higher in rank or status than others
体育运动in sport
2.[obn]成人的;高级水平的for adults or people at a more advanced level
年长之人for older people
3.[obn]年纪大的;老年的;年老的for senior citizens(= older people, especially those who have retired from work)
中学;大学school/college
6.[obn](高中或大学)毕业年级的connected with the last year in high school or college
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