名词
中文翻译：Unknown
同义词：
['focus', 'concentration', 'attention', 'focus of mind']
例句：
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1.The teacher asked the students to concentrate onthe lesson.
老师要求学生们专注于课堂。
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2. Sheconcentrated on her work and didn'tpay any attention to the noise around her.
她全神贯注地工作，没有注意到周围的噪音。
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3. The artist needed toconcentrate on his painting in order to achievethe desired effect.
这位艺术家需要集中精力在他的画作上，以达到预期的效果。