求翻译：我们的这次调查，总共发放了30份调查报告，最终收回了23份报告。我们对我们的调查对象的基本情况进行了详细的了解。他们都是我们身边的同学，他们基本上都是和我们一届的大三学生，男生和女生的人数基本相等，年龄大致相同，都在20-24之间。是什么意思？

Our survey, distributed a total of 30 investigation reports, 23 reports eventually recovered. We survey our basic understanding of the situation in detail. They are all around us the students, they are basically our term of junior students, the number of boys and girls basically the same, roughly th

This survey, we have a total of 30 reports have been issued, 23 reports were eventually recovered. We have for our basic information about the subject of the investigation carried out a detailed understanding. They are all around us, and they are all basically the students and we have a session, stu

Our this investigation, altogether has provided 30 reports of investigation, finally has taken back 23 reports.We have carried on the detailed understanding to our investigation object basic situation.They all are we side schoolmate, they basically all are and we session of big three students, the m

Our survey, issued a total of 30 survey, 23 reports were eventually recovered. We on our respondents ' understanding of basic statistics in detail. They are all around us the students, they are basically a term of us junior students, male and female students equal to the number of basic, roughly the

This investigation of ours, has released 30 survey reports altogether, has regained 23 reports finally. Our basic situation to our respondent has carried on the detailed understanding. They around us classmate, they we first session of junior basically, the number of boys and girl is basically equal