some dogs famished with hunger saw a number of cowhides steeping in a river. not being able to reach them, they agreed to drink up the river, but it happened that they burst themselves with drinking long before they reached the hides.

attempt not impossibilities.

几只饥饿的狗看见河面中心漂浮着一张牛皮，就想拿来充饥。可是牛皮距离河岸太远，他们想尽了办法也够不着。经过商量后，他们决定喝干河里的水，这样就可以得到那张牛皮了。结果，牛皮还没有拿到手，他们的肚皮就被河水胀破了。

不要尝试办不到的事情。