英语成语故事:一箭双雕

这个成语比喻用一种办法同时得到两种收获或效果。
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.