bì / yè / shí / tóng / xué / men / hù / xiāng / xiě / xià / zèng / yán / zuò / wéi / zhēn / guì / de / jì / niàn

毕业时，同学们互相写下赠言，作为珍贵的纪念。

At graduation, the students wrote parting messages to one another as precious keepsakes.