biān / jí / wén / dàng / shí / wǒ / cháng / yòng / zuǒ / jiàn / tóu / jiàn / jiǎn / chá / qián / miàn / de / nèi / róng编辑文档时,我常用左箭头键检查前面的内容。When editing a document, I often use the left arrow key to check the preceding text.