分类的英语量词 - 序数十

coming or happening right after the nineteenth person or thing

第二十

coming or happening right after the twenty-ninth person or thing

coming or happening right after the thirty-ninth person or thing

coming or happening right after the forty-ninth person or thing

the ordinal number of sixty in counting order

第六十

the ordinal number of seventy in counting order

第七十, 七十的

the ordinal number of eighty in counting order

第八十, 八十

the ordinal number of ninety in counting order

第九十, 九十