良师益友 Good teacher and friend
Explanation
良师益友指的是既能给予指导和帮助的好老师，也能给予支持和鼓励的好朋友。他们不仅在知识和技能方面给予帮助，更在人生道路上给予指引和鼓励。
A good teacher and friend is someone who provides guidance, support, encouragement and friendship. They help not only in terms of knowledge and skills but also provide guidance and encouragement on the path of life.
Origin Story
从小到大，李明一直很幸运，身边总是有良师益友相伴。小学时，他的班主任是一位慈祥和蔼的老教师，总是耐心细致地解答他的问题，为他指引学习的方向；中学时，他遇到了一位严厉却公正的数学老师，教会他认真思考、严谨求证的学习方法；大学期间，他结识了一位志同道合的朋友，两人互相鼓励，互相帮助，共同度过了许多难忘的时光。正是这些良师益友，陪伴他成长，帮助他克服困难，最终让他成为一个优秀的人才。
From childhood to adulthood, Li Ming has always been lucky to have good teachers and friends by his side. In elementary school, his head teacher was a kind and amiable old teacher, always patiently and meticulously answering his questions and guiding him in his studies; in middle school, he met a strict but fair mathematics teacher who taught him a rigorous and meticulous approach to learning; during college, he made a like-minded friend, and the two encouraged and helped each other, spending many unforgettable times together. It was these good teachers and friends who accompanied him in his growth, helped him overcome difficulties, and ultimately helped him become an excellent person.
Usage
用来赞扬那些既是好老师又是好朋友的人。
Used to praise those who are both good teachers and good friends.
Examples
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他不仅是一位优秀的老师，更是一位良师益友。
tā bù jǐn shì yī wèi yōuxiù de lǎoshī, gèng shì yī wèi liángshī yìyǒu.
He is not only an excellent teacher but also a good friend and mentor.
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我很庆幸能遇到一位良师益友，他教会我很多东西。
wǒ hěn qìngxìng néng yù dào yī wèi liángshī yìyǒu, tā jiàohuì wǒ hěn duō dōngxi
I am fortunate to have met a good teacher and friend who has taught me a lot.