名詞 senior:

1. an undergraduate student during the year preceding graduation
2. a person who is older than you are
   同義詞：elder

形容詞 senior:

1. older; higher in rank; longer in length of tenure or service
2. used of the fourth and final year in United States high school or college
   同義詞：fourth-year
3. advanced in years; (`aged' is pronounced as two syllables)
   同義詞：aged, elderly, older

1. She was unfit for such a senior position.
   她不能勝任這樣的高級職位。
2. Lying north of the church is a girls' senior high school.
   位于這座教堂以北的是一所女子高中。
3. He is my senior by two years.
   他比我大兩歲。
4. He is senior to me, though he is younger.
   他地位比我高，雖然他比我年輕。