A crow is very thirsty, and when he sees that there is a bottle of water, the water is shallow and the neck is thin, and he cannot drink it. It is to follow the fine guard, and fill it with stones.

When moving, the water is close to the mouth of the bottle. A woman is very good, pour its water, pour its stones, put a bottle on the ground, walk it, deflat, bag, go.

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Original:

A crow was thirsty and saw a bottle on the side of the road, with not much water in it and a small mouth. What to do? The clever crow took the pebbles into the bottle one by one. When the water was almost overflowing, an old lady came over, poured out the stones and water, and picked up the bottle.