微不足道 insignificant
Explanation
这个成语指的是微小到不值得一提，没有多少价值。
This idiom refers to something that is so small that it is not worth mentioning and has no great value.
Origin Story
在古代，有一个叫做张三的穷书生，他勤奋好学，每天都坚持读书，希望能考取功名，光宗耀祖。有一天，他去拜访一位有名的学者，想向他请教一些问题。学者见他衣衫褴褛，便问道：“你想要学什么？”张三羞愧地说：“我想要学习如何取得功名。”学者笑着说：“取得功名固然重要，但你的学识浅薄，就像一粒尘埃一样微不足道，你现在最重要的不是去追求功名，而是要认真学习，打好基础，才能有所成就。”张三听后，恍然大悟，他不再急于求成，而是认真学习，最终取得了学士学位。
In ancient times, there was a poor scholar named Zhang San who was diligent and studious. He persisted in reading every day, hoping to achieve fame and honor his ancestors. One day, he went to visit a famous scholar and wanted to ask him some questions. The scholar saw that he was dressed in rags and asked,
Usage
“微不足道”这个成语通常用来形容事情或人的作用很小，不值得一提。它可以用来形容一个人的贡献、一个项目的成果、一件物品的价值等。
The idiom “wēi bù zú dào” is usually used to describe things or people whose roles are very small and not worth mentioning. It can be used to describe a person's contribution, the results of a project, the value of an item, etc.
Examples
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我的意见在会议上微不足道，没有被采纳。
wǒ de yì jiàn zài huì yì shàng wēi bù zú dào, méi yǒu bèi cǎi nà.
My opinion was insignificant in the meeting and was not adopted.
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他为公司做出的贡献微不足道，但他的努力值得肯定。
tā wèi gōng sī zuò chū de gòng xiàn wēi bù zú dào, dàn tā de nǔ lì zhí de kěn dìng.
His contribution to the company was insignificant, but his efforts are commendable.