下工夫

zài dì yī háng shàng miàn xià gōng fu

在第一行上面下工夫

labor over the first line

zhè jiù xū yào zài jiào xué fāng fǎ fāng miàn xià gōng fu

这就需要在教学方法方面下工夫。

That needs to put in time and energy on teaching method.