对于一个产业来说，进入威胁的大小取决于呈现的进入障碍与准备进入者可能遇到的现有在位者的反击。其中，呈现的进入障碍称为结构性障碍。
美国人是否有能力和远见消除这些剥夺数百万同胞民主权利和机会的结构性障碍？
Do Americans have the capacity and vision to remove these structural barriers that deny democratic rights and opportunities to millions of their fellow citizens?
第三份报告呼吁加强顶层设计，以消除工业升级中的结构性障碍，并促进节能减排。
The third report appeals to strengthen the top-level design so as to eliminate structural obstacle in industrial upgrading and promote energy-saving and emission-reduction.
采取果敢措施，解决加重艾滋病毒感染脆弱性的法律和结构性障碍，特别对于最高危人群而言。
Taking bold measures to address legal and structural barriers that increase HIV vulnerability, particularly for most-at-risk populations.
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