东莞人防面积如何计算:Please cover the cage every night是什么意思?

Please cover the cage every night是什么意思? 联想打印机，dust on drum ,please clean the corona,located cover the drum .... to cover the increased costs please translate the sentence under the protective cover of the play structure的中文 联想打印机，M3120 ，出现close the back cover,back cover open! please install the ansi version 翻译Please refer to the... please keep the windows______(open) Please fill in the blanks.