动词
中文翻译：集中
同义词：
['concentrate', 'concentrate on']
例句：
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1. The teacher focused all her attention on the students during the test.
老师在考试期间把注意力全部集中在学生身上。
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2. She focused on her studies and ignored the distractions around her.
她专注于学习，忽略了周围的干扰。
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3. The CEO focused on improving efficiency in the company's operations.
首席执行官专注于提高公司运营的效率。