這個成語比喻用一種辦法同時得到兩種收獲或效果。

　　Killing Two Birds with One Stone

　　In the period of the Northern and Southern Dynasties(420-589) there was an expert archer named Zhangsun Sheng. One day he went hunting together with a friend. Suddenly they saw two vultures fighting for a piece of meat high in the air. His friend handed him two arrows, and said, “Can you shoot down both vultures?” Zhangsun Sheng effortlessly killed both vultures with only one arrow.

　　This idiom indicates achieving two things with one stroke.

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