zhè běn / jīng zhuāng shū / de / shū jǐ / cǎi yòng / mái xiàn / gōng yì / fēi cháng / láo gù

这本精装书的书脊采用埋线工艺，非常牢固

The spine of this hardcover book uses sunken cord binding, which is very sturdy.