fiftieth
柯林斯词典
1. ORD The fiftieth item in a series is the one that you count as number fifty. 第50
He retired in 1970, on his fiftieth birthday. 他在1970年50岁生日时退休。
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fiftieth /ˈfɪftɪɪθ/
剑桥词典
- 50th written as a word
第五十（的） 返回 fiftieth
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