动词
中文翻译：集中
同义词：
['concentrate', 'concentrate on', 'concentrate on sth.']
例句：
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1. The teacher focused all her attention on the lesson.
老师全神贯注地听讲。
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2. He focused his energy on completing the project.
他集中精力完成这个项目。
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3. She focused on her studies during the exam period.
考试期间，她专注于学习。