一石二鸟 kill two birds with one stone
Explanation
“一石二鸟”指的是用一块石头打中两只鸟，比喻做一件事能得到两种好处。
The idiom "kill two birds with one stone" refers to hitting two birds with one stone, which is a metaphor for doing one thing and getting two benefits.
Origin Story
古时候，有一个猎人，他去森林里打猎。他发现了一棵树上栖息着两只鸟。猎人想，如果我能用一块石头打中两只鸟，那就太棒了！于是，猎人瞄准了树上的两只鸟，用力地扔出了一块石头。石头飞速地飞向树枝，准确地打中了那两只鸟，它们都掉了下来。猎人高兴极了，因为他用一块石头就打到了两只鸟，真是“一石二鸟”啊！
Once upon a time, there was a hunter who went hunting in the forest. He saw two birds perched on a tree. The hunter thought, “If I could hit both birds with one stone, that would be great!” So, the hunter aimed at the two birds on the tree and threw a stone with all his might. The stone flew rapidly towards the branch and hit the two birds accurately, and they both fell down. The hunter was overjoyed because he had hit two birds with one stone, truly a “kill two birds with one stone”!
Usage
这个成语一般用来形容做一件事情能得到两种好处。
This idiom is used to describe doing one thing and getting two benefits.
Examples
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这个计划一石二鸟，既能解决资金问题，又能提高效率。
zhè ge jì huà yī shí èr niǎo, jì néng jiě jué zījīn wèn tí, yòu néng tí gāo xiào lǜ.
This plan kills two birds with one stone, solving both the funding issue and improving efficiency.
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这个方法一石二鸟，既能节省时间，又能提高质量。
zhè ge fāng fǎ yī shí èr niǎo, jì néng jiě shěng shí jiān, yòu néng tí gāo zhì liàng
This method kills two birds with one stone, saving time and improving quality.