名词
中文翻译：Unknown
同义词：
['filter', 'overcoat', 'mask']
例句：
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1.She used an overfilm to protect her camera lens during the long exposure shot.
她在长时间曝光拍摄时使用了过滤镜来保护相机镜头。
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2. The photographer carefully applied the overfilm to ensure it covered the entire surface of the painting.
这位摄影师仔细地将过滤镜贴在画作的表面，确保全覆盖。
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3. The scientist used an overfilm to shield the sensitive detector from external interference.
科学家使用过滤镜来屏蔽敏感探测器免受外界干扰。