学而不厌 Never tired of learning
Explanation
厌：满足。学习总感到不满足。形容好学。
Tired of; satisfied learning. It describes someone who is eager to learn.
Origin Story
春秋时期，孔子的学生们都很刻苦好学，常常向孔子请教各种问题。有一天，一位学生问孔子：“老师，我们如此努力学习，您会不会觉得很辛苦呢？”孔子笑了笑，说道：“我教书育人，乐此不疲，而你们学而不厌，更是令我欣慰。学习是永无止境的，只要你们保持着求知若渴的心态，不断进取，我就会一直教导你们。”于是，孔子便更加尽心尽力地教导学生们，并将自己的学识和经验毫无保留地传授给他们。在孔子的悉心教导下，学生们学业精进，品德高尚，成为了当时社会栋梁之才。
During the Spring and Autumn period, Confucius' students were all diligent and eager to learn, and often asked Confucius various questions. One day, a student asked Confucius: "Teacher, we study so hard, won't you feel very tired?" Confucius smiled and said: "I teach and educate people with great joy, and your tireless learning makes me feel very pleased. Learning is endless, as long as you maintain your thirst for knowledge and continuously improve, I will continue to teach you." So, Confucius taught his students with even greater dedication, and imparted his knowledge and experience to them unreservedly. Under Confucius' careful guidance, his students made great progress in their studies, developed noble morals, and became pillars of society at that time.
Usage
用于形容人好学，不满足于已有的知识，不断追求新的知识。
Used to describe someone who is eager to learn and never satisfied with the existing knowledge, constantly pursuing new knowledge.
Examples
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他学习非常刻苦，真是学而不厌。
ta xuexi feichang keku, zhenshi xue er bu yan
He studies very hard, he is never tired of learning.
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对于知识的渴求，他学而不厌，永不止步。
duiyu zhishi de keqiu, ta xue er bu yan, yong bu zhi bu
For the thirst for knowledge, he is never tired of learning, never stops.