求翻译：一个人要参加乒乓球比赛,由十二班对五班,将在学校体育馆举行比赛,时间是星期五下午四点钟,学生自己带水喝,要准时到达指定位置,学生自己带球和球鞋.是什么意思？

A person to attend table tennis matches, from 12 to five classes, will be held in the school gymnasium competition, time is Friday at four o'clock in the afternoon, students bring their own water to drink, to arrive to the specified location, students bring their own balls and shoes.