nǐ / zěn / me / huì / bǎ / zhè / me / zhòng / yào / de / wén / jiàn / shān / diào / zhēn / shi / nǎo / zi / jìn / shuǐ / le你怎么会把这么重要的文件删掉,真是脑子进水了?How could you delete such an important file? Have you lost your mind?