The Crow and the Pitcher。
1.The Crow and the Pitcher是乌鸦喝水的英文版故事。
2.该故事讲述，乌鸦发现一口杯子里的水太浅无法喝到，于是它想到用石头把水位抬高，从而得以喝到水。
3.这个故事传统上被视为一个类比，教导孩子一些非常基本的物理规律。
在这个故事中，乌鸦通过加入石头将水位抬高，已经利用了浮力的概念。

Once upon a time, there was a crow who was very thirsty. He flew to the pond looking for water but he couldn't find any. He was too lazy to fly anywhere else, so he decided to wait by the pond.

Soon, a thirsty fox came by and asked the crow for help. The fox said, "I am so thirsty, can you help me get some water?" The crow thought for a moment and said, " sure, if you put some stones at the bottom of the pond, I will be able to reach the water!"

The fox quickly gathered some stones and put them in the pond. The crow was able to stand on the stones and drink some water. The fox thanked the crow and both of them happily went their way.