分析砼桥梁裂缝的表现及其原因，采取有效措施防治砼桥梁裂缝病害，延长砼桥梁的使用寿命。
The paper analyzes the forms and causes of cracks of concrete bridges, and the measures taken to prevent the harm of cracks and lengthen the serviceable life.
然而，有一些原因使得许多商人仍然对于在Fours quare及其类似网站上下大注表现得小心谨慎。
There are, however, several reasons why many marketers are still wary of committing big money to Foursquare and its like.
文章第一部分是知识产权冲突的界定及其表现和原因。
The first part is the definition and representation and reasons of conflict of rights of Intellectual Property.
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