形容词
中文翻译：Unknown
同义词：
['subordinate', 'secondary', 'tertiary例句：1. The primary goal of the project is to improve efficiency.（该项目的主要目标是提高效率。）']
例句：
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1. The primary goal of the project is to improve efficiency.
该项目的主要目标是提高效率。
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2.The secondary school offers a variety of courses for students.
这所中学为学生提供了多种课程。
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3. The secondary market is where people buy and sell goods secondhand.
二级市场是人们购买和出售二手商品的地方。