名词
中文翻译：焦点
同义词：
['central spot', 'focus point']
例句：
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1.The camera is set at the focal spot of the scene.
相机对准了场景的中心。
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2.The scientist focused his attention on the focal spot.
科学家将注意力集中在了焦点上。
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3.The projector aimed its beam at the focal spot.
投影仪将光束对准了焦点。