瞳孔暴露于眼睛虹膜中央明显的黑色圆形，光线通过此孔才能达到视网膜 The apparently black circular opening in the center of the iris of the eye, through which light passes to the retina.
晶状体，水晶体眼球中一种透明的双面凸体，位于虹膜与玻璃体之间，它可使穿过瞳孔进入眼球的光线聚集在视网膜上来形成图像 A transparent, biconvex body of the eye between the iris and the vitreous humor that focuses light rays entering through the pupil to form an image on the retina.
落日的余晖、虹影和轻雾，今日不再笼罩在村落上了吗？世界上不再有直泻的瀑布、潺潺的流水，和多荫的树木了吗？ Are there no rosy sunsets today and no rainbows and no haze nestling over villages, and are there no falling cataracts and gurgling streams and shady trees?
不久，你的计算机显示器或许将配备虹膜扫描仪，当你在网上购物时可以辨识你的身份，以防欺诈。 Before long, your computer monitor may be equipped with an iris scanner that can identify you when you shop online, thus preventing fraud.
但是该系统还有待改进，可能还将增加眼球虹膜扫描或者面部辨认技术。 The system will later be enhanced, possibly to include iris scans or facial recognition technology, Hutchinson said.
微小的不移栖的海洋无脊椎动物，它们的身体呈囊状并带有可吸进和吐出水的虹吸管。 minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves.
虹彩陶器上光后表面的光泽，尤指虹彩陶器的金属光泽 The surface glossiness of ceramic ware after glazing, especially the metallic sheen of lusterware.
虹彩陶通过把金属氧化物加到釉面上制成的有金属光泽的陶器或瓷器 Pottery or porcelain having a metallic sheen produced when metallic oxides are added to the glaze.
彩虹在天上弯成拱形。 A bright rainbow arched above.
使液体通过虹吸管。 A liquid is made to flow through a siphon.
压力差使得液体通过虹吸管。 Difference of pressure makes a liquid flow through a siphon.
如果你汽油不够，可以从我的油箱里用虹吸管吸取一加仑。 If you're short of petrol you can siphon off a gallon from my tank.
不经历风雨，怎么见彩虹。 No cross, no crown.
角膜眼球似纤维的外膜的前部透明凸出部分，它覆盖虹膜和瞳孔并与巩膜连接 The transparent, convex, anterior portion of the outer fibrous coat of the eyeball that covers the iris and the pupil and is continuous with the sclera.
当然那边也许不只有一个月亮，而有十二个月亮，粉红色的，紫色的，绀青色的，青色的，橙黄色的，刺贤垤尔色的(iavender)，绿色的，蓝色的，此外也许还有更好而且更常见的彩虹。 Of course there may be a dozen moons instead of one, colored pink, purple, Prussian blue, cabbage green, orange, lavender, aquamarine, and turquoise, and in addition there may be better and more frequent rainbows.
彩虹清晰的拱 The vivid arc of a rainbow.
虹在天上成美丽的弧形。 The rainbow formed a beautiful arc in the sky.
似彩虹类似的弧或带子，如三棱镜或分光镜造成的 A similar arc or band, as one produced by a prism or by iridescence.
一道彩虹横跨天际。 A rainbow arched across the sky.
雨后彩虹在天上形成弓状。 A bright rainbow arched above after the rain.
军功是一道在血雨中升起的迷人的彩虹。 Military glory that attractive rainbow that arises in shower of blood.
产于北美洲，红色虹膜，羽毛主要为橄榄灰色，腹部羽毛为白色。 of northern North America having red irises and a olive-gray body with white underparts.
彩虹一边是红色，另一边是紫色。 A rainbow is red on one edge, violet on the other.
暖暖的阳光唤醒了沉睡在水底的虹鱼和凶猛的鳟鱼。石蛾也在水面上跳起了它古怪的舞蹈。 The warmth of the sun raised the water temperature enough to awaken the rainbow and cutthroat trout that slept, and the caddis flies were dancing their erratic dance, here and there, over the water.
—有时是一队队的穿白色制服的兵士，穿灰色制服的兵士，和佩着金黄色的肩章的军官，踏步前进，发生战斗，最后又退却了，那些穿白色制服的兵士突然换上了橙黄色的制服，那些穿灰色制服的兵士似乎换上了紫色制服，而背景却满布着火焰般的金黄的虹色。 now showing armies of white-clad and gray-uniformed armies and officers with golden epaulets, marching and counter-marching and united in combat and retreating again. As the battle and the chase were going on, the stage-lights changed, and the soldiers in white uniform burst out in orange and the soldiers in gray uniforms seemed to don purple, while the backdrop was a flaming iridescent gold.
许多消费者愿意为某种标识性品牌而多付钱。比如苹果的彩虹色标识，使他们感到他们是这个群体的一部分。 Many customers are willing to pay more for some badge of identification -- say, Apple's rainbow colored logo that makes them feel they are part of a community.
在未来岁月里，让我们在记忆的长虹里永远珍藏对他的怀念。 Now we can bask in the rainbow of the memories that we'll nurture in the years ahead.
看到天空中的彩虹，我就心荡神驰。 My heart leaps up when I behold a rainbow in the sky.
一年或两年一度的探亲如同天边的彩虹。 The yearly or the biennial visit is the rainbow on the horizon.