try to do the impossible

• 试图做不可能做到的事情； 缘木求鱼

try to do the impossible的用法和样例：

例句

1. It is very hard to shave an egg.
   缘木求鱼。
2. He would be milking a bull if he tried to settle the prblem that way.
   他若想那样解决问题，无异缘木求鱼。