形容词
中文翻译：Unknown
同义词：
['basic', 'fundamental', 'primary例句：1. The elementary school teacher was very kind to the children.（这位小学老师对孩子们非常友好。）']
例句：
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1. The elementary school teacher was very kind to the children.
这位小学老师对孩子们非常友好。
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2. The basic principle of this experiment is to observe the reaction.
这个实验的基本原理是观察反应。
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3.The primary goal of the project is to improve the efficiency of the production process.
该项目的主要目标是提高生产过程的效率。