这件事发生在十年前，当我还是个小学生时的翻译：It happened ten years ago, when I was a pupil, 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

This happened ten years ago, when I was a elementary school student

It happened ten years ago, when I was a pupil,

This matter occurs in ten years ago, when I am an elementary student

This happened 10 years ago, when I was an elementary school student,

It happened ten years ago, when I was a pupil,