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. 几条饥肠辘辘的狗看见一条河里泡着许多张牛皮。由于够不着这些牛皮，这几条狗就商定要把河水喝干。可是，早在够到牛皮之前，这些狗的肚皮就刚好被喝进去的河水给胀破了。 不要试图做不可能的事情。