乌鸦喝水

Belinda

A CROW perishing with thirst saw a pitcher, and hoping to find

water, flew to it with delight. When he reached it, he

discovered to his grief that it contained so little water that he

could not possibly get at it. He tried everything he could think

of to reach the water, but all his efforts were in vain. At last

he collected as many stones as he could carry and dropped them

one by one with his beak into the pitcher, until he brought the

water within his reach and thus saved his life.

Necessity is the mother of invention.