不甚了了 not very clear
Explanation
不甚了了，意思是说不太明白、不太了解。形容对某件事情或某个方面知识的理解不透彻、不清晰。
"Not very clear" means not quite understand or not quite know. It describes an incomplete or unclear understanding of something or a particular area.
Origin Story
老李退休后，开始学习书法。起初，他只觉得笔画简单，不甚了了，以为只要临摹就能掌握。然而，随着学习的深入，他发现书法并非只是简单的笔画组合，而是蕴含着丰富的文化内涵和技巧。他开始研读书法理论，拜访名师，从不同的角度去理解和实践，终于有所领悟，书法水平也日益精进。
After Mr. Li retired, he began to learn calligraphy. At first, he only felt that the strokes were simple, not very clear, and thought that he could master them simply by copying. However, as his studies deepened, he found that calligraphy is not just a simple combination of strokes, but also contains rich cultural connotations and techniques. He began to study calligraphy theory, visit famous teachers, understand and practice from different perspectives, and finally gained some insight, and his calligraphy level improved day by day.
Usage
这个成语通常用于表达对某件事情或某个领域的了解不深，理解不透彻。
This idiom is often used to express that one does not know much about something or a certain field, and does not fully understand it.
Examples
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我对这件事不甚了了，还需要进一步了解。
wǒ duì zhè jiàn shì bù shèn liǎo liǎo, hái xūyào jìnyībù liǎojiě
I don't quite understand this matter, I need to learn more about it.
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对于古代历史，我一向不甚了了。
duìyú gǔdài lìshǐ, wǒ yīxiàng bù shèn liǎo liǎo
I'm not very familiar with ancient history.