fifth
/fɪfθ/ordinal number
1- constituting number five in a sequence; 5th第五：
the fifth century BC
公元前5世纪
her mother had just given birth to another child, her fifth
她妈妈刚才又生了一个孩子, 她的第五个孩子
the world's fifth-largest oil exporter
世界第五大石油出口商
the fifth of November.
11月5号。
1.1
a fifth/one fifth
each of five equal parts into which something is or may be divided五分之一。
1.2
- the fifth finisher or position in a race or competition（比赛或竞赛的）第五名; 第五位：
he finished fifth.
他得了第五名。
1.3
- (in some vehicles) the fifth (and typically highest) in a sequence of gears（某些机动车辆的）第五挡（通常为最高挡）：
in my panic I changed from third to fifth.
慌乱之中, 我从第三档换到了第五档。
1.4
- chiefly Brit. the fifth form of a school or college〈主英〉（学校、学院的）五年级。
1.5
- fifthly (used to introduce a fifth point or reason)第五（用来引出第五个要点或原因）：
fourth, it can aid the process of life review, and fifth, it is an enjoyable and stimulating experience.
第四, 它有助于回顾生活的历程, 第五, 这种经历让人感到愉悦、刺激。
1.6
- Music an interval spanning five consecutive notes in a diatonic scale, in particular (also perfect fifth) an interval of three tones and a semitone (e.g. C to G)【乐】五度音程：
strings tuned a fifth apart.
把五度音程彼此定开的弦。
1.7
- Music the note which is higher by such an interval than the root of a diatonic scale【乐】五度和音。
1.8
a fifth of
US informal a fifth of a gallon, as a measure of alcoholic liquor, or a bottle of this capacity〈美, 非正式〉（酒的计量单位）五分之一加仑; 五分之一加仑的酒瓶：a fifth of whisky.
1/5加仑的威士忌。
短语
take the fifth
- (in the US) exercise the right guaranteed by the Fifth Amendment to the Constitution of refusing to answer questions in order to avoid incriminating oneself（美国）（根据《美国宪法第五修正案》）行使拒绝回答问题的权利（以免使自己显得有罪）。
派生词