例句
柯林斯高阶英汉双解学习词典释义
  • N-COUNT
    虹膜
    The iris is the round coloured part of a person's eye.
  • N-COUNT
    鸢尾属植物
    An iris is a tall plant with long leaves and large purple, yellow, or white flowers.
英汉词典释义
英英词典释义
  • Noun
    1. plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
    2. muscular diaphragm that controls the size of the pupil; it forms the colored portion of the eye
    3. diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
行业词典
  • 人体组织学: 虹膜;
    体育: 虹膜;
    农学: 鸢尾;又称 :鸢尾(Iris tectorum Maxim.);
    动物学: 虹膜;
    医学: 〔复irides)〔NA〕虹膜:角膜后的环形色素膜,中为瞳孔;是眼血管膜最前部,由瞳孔周围环形肌纤维及可使瞳孔开大的一薄层平滑肌纤维构成,以此控制进光量。虹膜的后面由二层色素上皮细胞组成;鸢尾根:蓝旗鸢尾(Iris versicolor)的根,过去用作泻剂、催吐剂及利尿剂;图示晶状体与瞳孔的关系;
    物理学: 可变光阑;
    药学: 虹彩;位于黑睛之后,晶珠之前的环形隔膜样组织,中间的圆孔为瞳神,虹彩具有调节瞳神开缩的作用。;
    解剖学: 虹膜;又称 :虹膜(Iris(拉));