2--You have hit the point. It's really hard for a magazine to be well known to people of various ages and educational backgrounds.
 
1--But I think Digest is supposed to be the top one. Its subscribers or buyers are from all social classes, perhaps, a majority of them from the educated group.It's quite strange that the readers love it after reading it.
 
2--To my mind, the success of Digest is in the clever selection of its articles in each issue.
 
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注解：
 
1.influential有影响的  
2.worldwide在全世界   
3.majority大部分   

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译文：
 
1--世界上有成千上万种杂志出版以满足不同读者的需要。但是在世界范围内具有影响的却不多。
2--你说到点上了。要使一份杂志为不同年龄、不同教育背景的群体所熟知，确实是件困难的事。
1--而我认为《文摘》杂志是最好的。它的订阅户和购买者来自社会的各个阶层，可能有很大一部分来自受过教育的群体。很奇怪的是读过它的人就会喜爱上它。
2--我觉得《文摘》的成功在于其聪明地选择每一期所要刊登的文章。