吃素的羊Vegetarian sheep

羊被狼逮住时说：任何确实的实验都说明，吃素能长寿。

狼说：难道狼吃草能活一百岁？

When the sheep was caught by the wolf, he said: Any actual experiment shows that vegetarians can live longer.

The wolf said: Can a wolf eat grass and live a hundred years old?