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 teacherfocused all her attention on the lesson.
老师全神贯注地听讲。
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2.She focused on her studies during the break.
她在休息时间专注于学习。
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3. The scientist focused his research on renewable energy.
这位科学家专注于可再生能源的研究。