每天一句：2015考研英语第三十一句

还有一分钟起飞，发出来了！

Making a buck is becoming progressively more challenging for brick-and-mortar retailers. Nearly two decades afterAmazon.com and others began to chop away at the underpinnings of thetraditional retailing business model, the pervasiveness of smartphones, theemergence of the digitally empowered consumer, and the prospect of one-daydelivery make the future of physical retailing seem ever more tenuous.

词汇突破：
' e" `' T2 S$ Y. Q6 h9 GMake a buck 挣钱
Progressively 越来越
Challenging 挑战性
( A2 v% M+ f) I8 Hbrick-and-mortar retailers 实体零售商
chop away at  削弱;动摇
+ G  a2 H; `0 h, C' j( yunderpinning （理论）基础
pervasiveness 遍布，普及
5 y1 B/ [! j$ F5 [  J9 a. f- W2 Dempower 获得…能力
* d  N4 O* ]) i1 q0 Z0 N4 pphysical retailing 实体销售
) b) U6 W2 a" h. O+ {0 `4 otenuous 脆弱;
% N! A: s' d& P; P' Y2 k5 l( Y
句子解析：
( a$ @' ?! U. u& {7 l1. Making a buck is becomingprogressively more challenging for brick-and-mortar retailers.
/ v& H! l9 H) g; }) O6 U# @对于实体店而言，赚钱变得越来越困难
# V# S; }9 i5 y- M" v            
2. Nearly two decades after Amazon.com andothers began to chop away at the underpinnings of the traditional retailingbusiness model, the pervasiveness of smartphones, the emergence of thedigitally empowered consumer, and the prospect of one-day delivery make thefuture of physical retailing seem ever more tenuous.
9 o+ j$ R, N3 c! q4 n# g! @# v
句子主干：A, B and C make D seem ever more tenuous.
1 J* o/ e2 p  Y! z
A= the pervasiveness of smartphones,
5 Z6 a/ B) f  t3 `* X. o, UB= the emergence of the digitally empowered consumer
C= the prospect of one-day delivery
其他成分：Nearly two decades after Amazon.com and others began to chop away atthe underpinnings of the traditional retailing business model,时间状语
* A' q6 [5 d* {8 i# A( X$ P7 N# v                     

参考译文：二十多前，亚马逊以及其他公司就开始削弱传统零售商业模式的理论基础，智能手机无处不在，消费者拥有了数字技术的能力，快递业可以当日送达，这些都使得实体销售的前景似乎更加岌岌可危