the [noun]
定冠词 the 指特指的一株或一种鸢尾。
The iris has beautiful purple flowers.
这株鸢尾有美丽的紫色花朵。
鸢尾；光圈；波导膜片；振荡色斑的内圈；具有剑形叶片和直立花茎的植物,开有由三片花瓣和三片下垂萼片组成的鲜艳花朵
the colored ring of the eye around the pupil, controlling how much light enters
A plant of the genus Iris, common in the northern hemisphere, and generally having attractive blooms (See Iris (plant) on Wikipedia.Wikipedia ).
具有剑形叶片和直立花茎的植物,开有由三片花瓣和三片下垂萼片组成的鲜艳花朵
plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
瞳孔穿孔的可收缩膜,调节光线进入视网膜,形成眼睛的彩色部分
The contractile membrane perforated by the pupil, which adjusts to control the amount of light reaching the retina, and which forms the colored portion of the eye (See Iris (anatomy) on Wikipedia.Wikipedia ).
控制瞳孔大小的肌肉隔膜,从而控制进入眼睛的光量；形成眼睛的有色部分
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
A diaphragm used to regulate the size of a hole, especially as a way of controlling the amount of light reaching a lens.
由薄的重叠板组成的隔膜,可以调整以改变中央开口的直径
diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
A constricted opening in the path inside a waveguide, used to form a resonator.
The inner circle of an oscillated color spot.
She planted purple irises along the garden path to add color in spring.
她在花园小径旁种了紫色的鸢尾花，为春天增添色彩。
用法提示：名词，指鸢尾属植物，用作句子主语。
The floral arrangement featured irises and lilies in a tall vase.
这个花艺作品以鸢尾花和百合花为主，插在一个高花瓶里。
用法提示：名词，指鸢尾花，用作动词的宾语。
Irises bloom best in well-drained soil and full sunlight.
鸢尾花在排水良好的土壤和充足的阳光下开得最好。
用法提示：名词复数形式，指鸢尾属植物，用作主语。
定冠词 the 指特指的一株或一种鸢尾。
The iris has beautiful purple flowers.
这株鸢尾有美丽的紫色花朵。
不定冠词 a 表示泛指一株鸢尾。
She bought an iris for her garden.
她为花园买了一株鸢尾。
复数形式指多株鸢尾。
Irises bloom in late spring.
鸢尾在晚春开花。
常用于指某些鸢尾品种，尤指蓝花或黄花类型，日常口语中较常见
多用于纹章、艺术或装饰语境，日常口语中不常用；且拼写源自法语
较少用，多出现在园艺描述中，并非标准植物学名称
鸢尾花
The iris flower has three petals and three sepals.
鸢尾花有三片花瓣和三片萼片。
蓝色鸢尾（花）
She planted a bed of blue irises in the garden.
她在花园里种了一床蓝色鸢尾花。
鸢尾花园
The iris garden is in full bloom in spring.
鸢尾花园在春天盛放。
虹膜颜色
Her iris color is a striking green.
她的虹膜颜色是引人注目的绿色。
虹膜肌肉
The iris muscles control the size of the pupil.
虹膜肌肉控制瞳孔的大小。
虹膜图案
Each person has a unique iris pattern.
每个人都有独特的虹膜图案。
Dictionary facts from ECDICT, WIKTIONARY.