褒义词

duì niú tán qín de chéng yǔ dà jiā dōu míng bai bìng bù shì yī gè bāo yì cí

“对牛弹琴”的成语大家都明白并不是一个褒义词。

We all knowthe phrase "howling at the moon" is not a commendatory term.