独特理论方法体系的构建是一门学科成熟的标志。
The Unique theoretical and methodology system is the symbol of a mature subject.
我们的太阳系中的行星不是那些可以通过理论预测其组成的普通行星，而是独特的个体，它们的化学和构造特征都是由它们创造的。
Instead of normal planets whose composition could be predicted by theory, the planets populating our solar system are unique individuals whose chemical and tectonic identities were create.
的确，很多管理科学理论具有一定的可适应性，但是它们几乎没有关注到特定的和独特的项目管理环境。
It is true that much management science theory is applicable, but there is little that focuses on the specific and unique environment of project management.
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