名词
中文翻译：预聚焦
同义词：
['pre-focus', 'pre-focus lens']
例句：
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1.The camera is set up for prefocusing on the main subject.
相机已经设置好，用于对主要主题进行预聚焦。
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2.The photographer used a prefocus lens to capture the shot.
摄影师使用了一个预聚焦镜头来捕捉这个镜头。
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3. The film was prefocused before it was developed.
在胶片被冲洗之前，它已经被预聚焦了。