名词
中文翻译：初级部分
同义词：
['primary section', 'elementary part例句：1. The teacher explained the concept in an elementary section.（老师在初级部分解释了这个概念。）2. This book has a detailed elementary section on history.（这本书有一个关于历史的详细初级部分。）3. The engineer divided the project into several elementary sections.（工程师将项目分成了几个初级部分。）']
例句：
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1. The teacher explained the concept in an elementary section.
老师在初级部分解释了这个概念。
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2. This book has a detailed elementary section on history.
这本书有一个关于历史的详细初级部分。
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3. The engineer divided the project into several elementary sections.
工程师将项目分成了几个初级部分。