形容词
中文翻译：基础的
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础数学的概念。
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2. The book is written for elementary readers.
这本书是为初级读者写的。
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3. The team's performance was elementary but effective.
团队的表现虽然基础但有效。