对牛弹琴

xiàn zài wǒ jué de wǒ zhǐ shì zài duì niú tán qín bà le

现在我觉得我只是在对牛弹琴罢了。

Now I think I was just casting pearls before swine.

bù yào duì niú tán qín

不要对牛弹琴。

Don't cast your pearls before swine.

tā men shì yì tā jǔ zhǐ bù dàng rú tóng duì niú tán qín

他们示意他举止不当，如同对牛弹琴。

Their hints about his behaviour were like water off a duck's back.

yào xiǎng shuō fú tā zài shǐ yòng biàn lì shè shī shang duō huā xiē qián rú tóng duì niú tán qín

要想说服他在使用便利设施上多花些钱如同对牛弹琴。

Trying to get him to agree to spend more money on amenities is like talking to a brick wall.

hàn yǔ chéng yǔ de yī gè lì zi shì duì niú tán qín

汉语成语的一个例子是“对牛弹琴”。

One example of an idiom in the Chinese language is "to play the lute to a cow".