名词
中文翻译：Unknown
同义词：
['subordinate course', 'lower-level course', 'lesser course']
例句：
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2.
尤指
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3.
尤指
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1. The student needs to take a lower course before moving on to higher ones.
学生需要在上更高级别的课程之前先修一些基础课程。
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2. She took a lower course in mathematics before she could handle the more advanced material.
在能够处理更高级的材料之前，她先修了一门数学的较低级别课程。
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3. The company offers a lower course for those who are new to the industry.
该公司为那些对行业不熟悉的人提供了一门较低级别的课程。