为什么天空看起来是蓝色的？
In fact, the sky has no color. Then why does the sky look blue?
事实上，天空没有颜色。那为什么天空看起来是蓝色的呢？
你今天早晨看上去很忧伤。
What's wrong? You look blue today.
怎么啦？你今天闷闷不乐的。
看起来是蓝色的。
Mary: Jack, you look blue. What's wrong?
玛丽：杰克，你看起来闷闷不乐的，怎么了?。
What's the matter, Elizabeth? You look blue this.
伊丽莎白，出什么事了？你今天早晨看上去很忧伤。
Some look white, some look red and some look blue.
一些看起来白色，一些看起来红色，一些看起来蓝色。
Rob, you don't look blue to me - just your normal colour.
罗布，我觉得你的脸看起来不青啊——只是正常的颜色而已。
In infrared light, shorter wavelengths look blue, and longer wavelengths appear red.
红外光下，较短的波长会程现蓝色，而较长的波长则程现红色。
The magenta stripes make the other part of the spiral look blue, even though they are exactly the same color.
桃红的条纹让另一道条纹看上去呈蓝色，即使它们根本就是同一个颜色 。
Those who suffer from rheumatic heart disease and congenital heart disease, especially those who look blue or pale in the face during exercise.
患风湿性心脏病和先天性心脏病的人，特别是运动中脸色发白发青的人。
They'll look like a bed o' blue an' white butterflies flutterin' when they're out.
它们开放以后，就会像一群蓝色和白色的蝴蝶在飞舞。
Krebs has discovered that great blue herons look up more often when in smaller flocks than when in larger ones, solely as a consequence of poor feeding conditions.
克雷布斯发现，大蓝鹭在较小的群体中比在较大的群体中更容易抬头，这完全是由于恶劣的饲养条件造成的。
Look at the Earth from space. Why does our planet look so blue?
从太空中看向地球。为什么我们的星球看起来如此之蓝？
You look so smart! Your jacket matches the blue jeans.
你看起来真时髦！你的夹克和蓝色牛仔裤很相称。
She hadn't had breakfast that morning because the fruit salad on the blue dish didn't look delicious at all.
那天早上她没吃早饭，因为蓝色盘子里的水果沙拉看起来一点也不好吃。
How pretty you look in that blue dress!
你穿那条蓝色裙子看起来真漂亮啊！
It will look like a blue ocean, we're losing it that quickly, "he said."
它会看起来象一个蓝色海洋。我们会这么快就失去它，“他说。”
The hardest colors to look at together are red and blue.
最难看清的颜色是将红色和蓝色放在一起。
I love the look of a navy blue dress with black shoes, or a black dress with light brown or nude shoes.
我喜欢用一条深监色裙子和黑色鞋子搭配，或者是黑裙子和浅棕色或肉色鞋子搭配的样子。
You can see how a tint can change the overall mood and feel of an image: Sepia tones make it look nostalgic, blue tones make it look cold and unwelcome, and so forth.
你可以发现染色是怎样改变了照片的整体效果：棕褐色是照片看上去怀旧，蓝色调看上去冷冷的、难以亲近。
Do you think I look fashionable in this blue dress?
我穿这件蓝裙子是不是很时尚？
He isn't much to look at: a blue jay-size fellow with plain, olive-drab feathers and a single streak of orange on his head.
他相貌平平：个头跟蓝松鸦差不多，深绿褐色的羽毛，头上有橙色的条纹。
He isn't much to look at: a blue jay-size fellow with plain, olive-drab feathers and a single streak of orange on his head.
他相貌平平：个头跟蓝松鸦差不多，深绿褐色的羽毛，头上有橙色的条纹。
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