名词
中文翻译：焦点长度确定
同义词：
['focus length determination', "focal length measurement例句：1. The camera'sfocal length determines the depth of field.（相机的焦距决定了景深。）"]
例句：
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1. The camera'sfocal length determines the depth of field.
相机的焦距决定了景深。
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2. The scientistdetermined the cause of the disease through experiments.
科学家通过实验确定了这种疾病的原因。
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3. The photographer focusedher lens to capture the perfect shot.
摄影师调整镜头，捕捉到了完美的画面。