名词
中文翻译：聚焦磁铁
同义词：
['focusing magnet', 'magnetic focuser']
例句：
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1.The new product is a focus magnet for our customers.
新产品是我们客户的焦点。
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2. The scientist used a focus magnet to align the beam of light.
科学家使用一个聚焦磁铁来对准光束。
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3. The research team focused on the magnetism of the earth's core.
研究团队专注于地球核心的磁性。