fifthKK [ˋfɪfθ] /ˈfɪfθ/形容詞1第五的、第五This is the fifth time I've called them today.這已經是我今天第五次打電話給他們了。名詞1五分之一About a fifth of the students signed up for the trip.大約五分之一的學生報名參加這趟旅行。2第五個、第五名He was the fifth in line to be interviewed.他是排隊等面試的第五個。3五度、五度音程音樂The two notes are a perfect fifth apart.這兩個音相隔一個完全五度。4美國憲法第五修正案美式，常大寫The witness took the Fifth and refused to answer.證人援引憲法第五修正案，拒絕回答。顯示全部 6 個義項副詞1第五、居第五She finished fifth in the marathon despite the heat.儘管天氣炎熱，她在馬拉松中拿到第五名。