1. to sledgehammer a punch to somebody

 

　　给某人以重磅炸弹式的重击

 

　　2. Driving a nail with a sledgehammer isn't very effective.

 

　　用一把大锤去拔个钉子很费劲吧。

 

　　3. Two words, leukemia and transplant, combined in a sledgehammer punch to my gut.

 

　　白血病和移植这两个词连在一块，犹如一把重锤给了我狠狠的一击。