单词：iris
[化] 可变光阑
n. muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eye
n. diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
iris的用法和样例：
例句
- The opening of the iris is called the pupil.虹膜的开口处叫做瞳孔。
- The iris is fixed to the ciliary body.虹膜固定在睫状体上。
- The iris of the eye is photographed from up to one meter away.眼睛的虹膜最远可在一公尺外的距离接受摄影。
- Could you teach me how to adjust the iris of the camera?你能教我怎么调照相机的光圈吗？
- Iris is the French national flower.鸢尾是法国国花。
词汇搭配
- iris diaphragm[摄]虹彩光圈...
- iris-out【电视】【电影】圈出...
- iris-in【电视】【电影】圈入...
经典引文
His crest, that prouder than blue Iris bends.
出自：Troilus Cressida,ShakespeareIf Liberty Lent not life its soul of light, Hope its iris of delight.
出自：fig.
- iris diaphragm[摄]虹彩光圈...
- sword lily[植]剑兰
- flag旗
- fleur-de-lis鸢尾
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