动词
中文翻译：补习
同义词：
['reinforce', 'review', 'tutor', 'supplement']
例句：
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1. She decided to take a course to improve her English.
她决定参加一个课程来提高她的英语水平。
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2. The teacher gave us some tips on how to do better in our exams.
老师给了我们一些建议，帮助我们在考试中做得更好。
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3. After finishing the textbook, I felt more confident about my knowledge.
读完这本书后，我对自己所学的知识更有信心了。