单词：niche theory
niche theory的用法和样例：
例句
- The Ecological Theory is one of the basic theories in ecology.摘要生态位理论是生态学中的基本理论之一。
- Chapter two makes a literature interview of the nature of reading and the Theme-Rheme Theory.第二章对文献进行了回顾，介绍了阅读的本质及主述位理论。
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