名词
中文翻译：暗场线
同义词：
['暗线，暗区线例句：1. The dark field line is the boundary between light and dark.（暗场线是光与暗的分界线。）']
例句：
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1. The dark field line is the boundary between light and dark.
暗场线是光与暗的分界线。
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2.The dark field line is crucial for understanding the distribution of light in a scene.
暗场线对于理解场景中光线分布至关重要。
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3.The dark field line was used to create a sense of depth in the photograph.
暗场线被用来在照片中创造出深度感。