IT部门将于2012年6月29日18时开始对公司计算机系统进行升级。本项工作将于2012年6月30日结束的翻译：IT departments will start on June 29, 2012 the company computer system upgrade. This work will end on June 30, 2012 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

it department 29 June 18, 2012, the company's computer system upgrade. This work ended June 30, 2012

IT departments will start on June 29, 2012 the company computer system upgrade. This work will end on June 30, 2012

IT department in June 29, 2012 18 o'clock starts to carry on the promotion to the company computer system.This work ended in June 30, 2012

IT sector will June 29, 2012 starting at 18 of the company's computer system. This work will be June 30, 2012 end

IT departments will start on June 29, 2012 the company computer system upgrade. This work will end on June 30, 2012