2011.10．16-2011.10.20 职业健康与安全全体学生图书馆报告厅 2小时的翻译：2011.1. 16-2011.10.20 occupational health and safety of all students Library Auditorium 2 hours 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

2011.10.16-2011.10.20 occupational health and safety of all students in the library lecture hall two hours

2011.1. 16-2011.10.20 occupational health and safety of all students Library Auditorium 2 hours

2011.10.16-2011.10.20 Occupation health and safety All student Library report hall 2 hours

16- 011.10 011.1020- occupational health and safety * * * the whole library students Office report * 2 hours

2011.1. 16-2011.10.20 occupational health and safety of all students Library Auditorium 2 hours