thirty-first
01
第三十一, 三十一
coming or happening right after the thirtieth person or thing
例子
The thirty-first of October is widely celebrated as Halloween, with people dressing up in costumes and trick-or-treating.
10月三十一日被广泛庆祝为万圣节，人们会穿上服装并玩“不给糖就捣蛋”。
She was excited to finally move into her new apartment on the thirty-first of March.
她很高兴终于在三月三十一日搬进了她的新公寓。
