名词中文翻译
中文翻译：虹膜环
同义词：
['iris ring', 'iris ringstructure']
例句：
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1. The doctorexamined the patient's eye and founda ciliary ring in his iris.
医生检查了病人的眼睛，发现他的虹膜中有环状结构。
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2. Theciliary ring is responsible for maintainingthe shape of the eyeball.
虹膜环负责保持眼球的形状。
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3. Theciliary ring playsa crucial role in vision.
虹膜环在视力中起着关键作用。