thirtieth
01
第三十, 第30
coming or happening right after the twenty-ninth person or thing
例子
She was thrilled to receive a surprise party for her thirtieth birthday, celebrating this milestone with friends and family.
她很高兴为她的三十岁生日收到一个惊喜派对，与朋友和家人一起庆祝这一里程碑。
Thirtieth
01
第三十, 第三十位
position 30 in a countable series of things
