贪心不足 insatiable greed
Explanation
形容人贪婪，永不满足。
Describes someone who is greedy and never satisfied.
Origin Story
很久以前，在一个繁华的集市上，住着一位名叫阿牛的年轻人。阿牛为人勤劳，靠着卖水果为生，日子虽然清贫，但也算过得安稳。一天，一位路过的富商看到阿牛的水果新鲜饱满，便大量收购，阿牛赚得盆满钵满。尝到甜头的阿牛，并没有满足于现状。他开始盘算着如何赚取更多的钱财。他把赚来的钱全部投入到更大的生意中，却因为经验不足，生意接连亏损，最终倾家荡产。阿牛的经历告诉我们，做人要知足常乐，切莫贪心不足蛇吞象，否则只会适得其反。
Long ago, in a bustling marketplace, lived a young man named A Niu. A Niu was hardworking and made a living selling fruit. Although his life was simple, he lived peacefully. One day, a wealthy merchant passing by saw that A Niu's fruits were fresh and plump and bought them in large quantities. A Niu earned a lot of money. Having tasted success, A Niu did not settle for the status quo. He began to think about how to make even more money. He invested all his money in a larger business but, due to lack of experience, suffered losses and eventually lost everything. A Niu's experience teaches us that one should be content with what one has and should not be greedy; otherwise, it will backfire.
Usage
用于形容一个人贪得无厌，永不满足。
Used to describe someone who is greedy and never satisfied.
Examples
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他贪心不足，还想再要更多。
tā tānxīn bù zú, hái xiǎng zài yào gèng duō
He was insatiable and wanted more.
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她贪心不足，已经拥有很多财富，却仍旧渴望更多。
tā tānxīn bù zú, yǐjīng yǒngyǒu hěn duō cáifù, què réngjiù kěwàng gèng duō
She was greedy; despite having so much wealth, she still craved more.
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不要贪心不足蛇吞象，要量力而行。
bùyào tānxīn bù zú shé tūn xiàng, yào liànglì ér xíng
Don't be greedy and try to swallow an elephant; you must assess your capabilities and avoid overextending yourself