rú / guǒ / zhǐ / fú / guāng / lüè / yǐng / de / dú / shū / hěn / nán / zhēn / zhèng / zhǎng / wò / fù / zá / de / zhī / shí

如果只浮光掠影地读书，很难真正掌握复杂的知识。

If you read only superficially, it is difficult to truly master complex knowledge.