名词
中文翻译：镜头
同义词：
['eyepiece', 'lense', 'eyepiece']
例句：
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1. The photographer focused the lens on the subject.
摄影师把镜头对准了主题。
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2. Lens flares are caused by light bouncing off the surface of the lens.
镜头光斑是由光线在镜头表面反弹造成的。
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3. The camera's lens is scratched and needs to be replaced.
相机的镜头被刮伤了，需要更换。