2--No, doing it in the long run will make you an acute man.
 
1--I'm afraid playing the chess like that will soon make me an old man. I noticed that most chess players were bald.
 
2--That's because you are always fixing your eyes on the bald.
 
===================================
注解：
 
1.playing the chess下棋  
2.exhausting令人筋疲力尽的    
3.acute man思维敏捷的人     

===================================
译文：

1--下棋很耗精力，不是吗？
2--不，常下棋会使你成为一个思维敏捷的人。
1--我担心常下会使我早早变成一个老人。我发现大多下棋的人都秃顶。
2--那是因为你总是把眼睛盯在秃顶上的缘故。