名词
中文翻译：虹膜
同义词：
['iridophore', 'iris pigment']
例句：
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1.The doctor examined the patient's eyes and found a problem with the iris canna.
医生检查了病人的眼睛，发现虹膜有问题。
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2. The iris canna is responsible for controlling the amount of light that enters the eye.
虹膜负责控制进入眼睛的光量。
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3. The iris canna plays a crucial role in vision correction surgery.
虹膜在视力矫正手术中起着关键作用。