形容词
中文翻译：Unknown
同义词：
['primary', 'fundamental', 'basic']
例句：
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1. The teacher explained the concept of elementary mathematics to the students.
老师向学生们解释了基本数学的概念。
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2. The textbook is designed for elementary students.
这本教科书是为小学生设计的。
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3. The child was able to understand the lesson on elementary physics.
这个孩子能够理解关于基础物理的课程。