试卷上交之前请认真检查两遍的翻译：Paper hand carefully before checking it twice 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

Please carefully check the papers turned over twice before

Paper hand carefully before checking it twice

Before the examination paper delivers please earnestly inspect two

Please carefully check before filing papers twice

Paper hand carefully before checking it twice