动词短语
中文翻译：锐化焦点
同义词：
['focus', 'sharpen']
例句：
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1.The photographer focused his lens on the distant mountain.
摄影师把镜头对准了远处的山。
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2.The artist sharpened her brush to make a finer stroke.
艺术家磨尖了她的画笔，以便画出更细致的线条。
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3. The scientist sharpened her research skills to improve her findings.
科学家提高了她的研究技能，以改进她的研究结果。