名词
中文翻译：Unknown
同义词：
['photography', 'photographic', 'photo-etching']
例句：
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1. The photographer used a special film to create the photo-hardening effect.
这位摄影师使用了一种特殊的胶片来创造照片硬化效果。
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2. During the photo-hardening process, the image is exposed to UV light.
在照片硬化过程中，图像会被暴露于紫外线下。
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3. The photo-hardening technique has become increasingly popular in recent years.
近年来，照片硬化技术越来越受欢迎。