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　　例句：

　　Fundamentally,the USPS is in a historic squeeze between technological change that has permanently decreased demand for its bread-and-butter product,first-class mail,and a regulatory structure that denies management the flexibility to adjust its operations to the new reality.(2018年英语一Text4)

　　重点词汇：

　　fundamentally adv.根本的，从根本上

　　USPS abbr.美国邮政署(United States Postal Service)

　　squeeze n.挤压，压榨

　　permanently adv.永久地，长期不变地

　　bread-and-butter adj.实用的，基本的

　　regulatory adj.管理的

　　flexibility n.灵活性

　　断句：

　　Fundamentally,the USPS is in a historic squeeze//between technological change//that has permanently decreased demand for its bread-and-butter product,first-class mail,//and a regulatory structure//that denies management the flexibility to adjust its operations to the new reality.

　　语法分析：

　　句首副词Fundamentally作状语;主干为the USPS is in a historic squeeze主系表结构，主语是the USPS，系动词是is，表语是in a historic squeeze;between technological change and a regulatory structure为介词短语作后置定语，修饰squeeze;that has permanently decreased demand for its bread-and-butter product,first-class mail为定语从句，修饰technological change;that denies management the flexibility to adjust its operations to the new reality为定语从句，修饰regulatory structure。

　　难点分析：

　　此句难点在于含有多个定语从句，导致句子变长，提取出between A and B结构，有利于理清句子结构。

　　翻译：

　　从根本上，美国邮政署正处于一个历史性的挤压之中，一方面技术变化已经永久地降低了其基本产品和一类信件的需求，另一方面管理结构拒绝给予管理层灵活性，来让运营适用于新的现实。

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