名词
中文翻译：双焦点透镜
同义词：
['doublet lens', 'dichroic lens', 'double-lensed lens']
例句：
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1. The camera has a diopter lens that allows you to adjust the focus easily.
这台相机有一个双焦点透镜，可以轻松调整焦距。
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2.The scientist used a diopter lens to study the properties of light.
科学家使用了一个双焦点透镜来研究光的性质。
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3.The telescope is equipped with a diopter lens that can magnify distant objects.
望远镜配备了一个双焦点透镜，可以放大远处的物体。