thirteenth
柯林斯词典
1. ORD The thirteenth item in a series is the one that you count as number thirteen. 第13
...his thirteenth birthday. …他的13岁生日。
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thirteenth /ˈθɜːˈtiːnθ/
剑桥词典
- 13th written as a word
第十三
My birthday is on the thirteenth (of October ). 我的生日是（10月）13日。 返回 thirteenth