柯林斯詞典seventeenth /?s?v?n?ti?nθ/ (seventeenths) 1. ORD The seventeenth item in a series is the one that you count as number seventeen. 第17; 第十七 She gave birth to Annabel just after her seventeenth birthday. 她剛過完17嵗生日就生下了安娜貝爾。2. FRACTION A seventeenth is one of seventeen equal parts of something. 1/17; 十七分之一 返回 seventeenth劍橋詞典17th written as a word 第十七（的） My mother's birthday is on the seventeenth (of June ). 我母親的生日是（6月）17日。 返回 seventeenth