意犹未尽 still unfinished
Explanation
指还没有尽兴；感到满足而留恋。
It means that one is not yet satisfied; one feels satisfied and longing.
Origin Story
老张是一位资深摄影师，他热爱自然风光，每到周末都会背着相机去郊外拍摄。一天，他来到了一片美丽的田野，金黄的油菜花盛开，微风轻轻拂过，花香弥漫，景色如画。他兴奋地架起相机，不断地拍摄，记录下这美丽的瞬间。夕阳西下，他依依不舍地离开了这片田野。回到家后，他仔细地挑选照片，一张张照片都让他回味无穷，仿佛又回到了那片美丽的田野，感受着花香和微风的轻抚。他意犹未尽，决定下个周末再去拍摄，捕捉更多美丽的瞬间。
Old Zhang is a veteran photographer who loves natural scenery. Every weekend, he carries his camera to the suburbs to take pictures. One day, he came to a beautiful field, where golden rape blossoms were in full bloom. A gentle breeze blew, the fragrance of flowers filled the air, and the scenery was picturesque. He excitedly set up his camera and kept taking pictures, recording these beautiful moments. As the sun set, he reluctantly left the field. Back home, he carefully selected the photos. Each photo made him reminisce, as if he was back in that beautiful field, feeling the fragrance of flowers and the gentle breeze. He was still not satisfied and decided to go back to shoot next weekend to capture more beautiful moments.
Usage
表示事情结束或活动停止后，还感到很满足，还有意愿继续下去。
It means that after the end of something or an activity, one is still very satisfied and still has the desire to continue.
Examples
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这场演出太精彩了，真是意犹未尽！
zhè chǎng yǎnchū tài jīngcǎi le, zhēnshi yìyóu wèijìn！
The performance was so wonderful, I still feel unsatisfied!
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看完这部电影，我意犹未尽，还想再看一遍。
kàn wán zhè bù diànyǐng, wǒ yìyóu wèijìn, hái xiǎng zài kàn yībiàn。
After watching this movie, I still want to watch it again.
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这次旅行虽然短暂，但也意犹未尽。
zhè cì lǚxíng suīrán duǎnzàn, dàn yě yìyóu wèijìn。
Although this trip was short, I still feel unsatisfied after the trip end