这个概念对我来说太抽象了。

zhège gàiniàn duì wǒ lái shuō tài chōuxiàng le.

This concept is too abstract for me.

这幅画的风格比较抽象。

zhè fú huà de fēnggé bǐjiào chōuxiàng.

The style of this painting is relatively abstract.

这个问题太抽象，我理解不了。

zhège wèntí tài chōuxiàng, wǒ lǐjiě bùliǎo.

This problem is too abstract, I can't understand it.