yǔ / qí / bó / ér / bù / jīng / de / xué / xí / xǔ / duō / kē / mù / bù / rú / xiān / zhuān / xīn / zhǎng / wò / yì / mén

与其博而不精地学习许多科目，不如先专心掌握一门。

Rather than study many subjects superficially, it is better to focus on mastering one first.