听力文摘：眯眼睛真的有效吗？

Is squinting¹ really that effective?

眯眼睛真的有效吗？

Male: Thanks for coming on this fact-finding trip with me and share the driving.

谢谢你来跟同我一道进行实地考察。

Female: Glad to do it. It should be a fun trip. I imagine I will learn a lot.

很乐意！应该会很有趣的。我觉得我也会学到很多东西。

M: I hope so. So i think we are getting close to our exit.So I'll keep an eye on it.For there is a sign but I can't quite make it out.

但愿如此！我想我们正在靠近出口了，所以我要集中精力，因为有个地方我总是辨别不出来。

F: Donne, you're squinting to see the sign. Does that really help?

多恩，你（眼睛）眯着看东西，真有帮助吗？

M: It really does. I can read it now when I am squinting.

是的。当我眯着眼睛的时候就可以认出来。

F: Let's see now.Light enters the eye from many directions. The lens of the eye bends these rays so that they come together at a focal point. When the rays come together at the retina, the image is in focus. If this focal point is in front of the retina, close objects are clear-nearsightedness; if it is behind the retina, distant objects are clear-farsightedness.

让我们现在来看看。光线从四面八方进入到人的眼睛里，眼睛里的晶状体会使这些光线转向，好让它们聚集到同一焦点。当光线聚集到视网膜，清晰的图像就形成了。如果该聚焦点在视网膜前，进出的东西就会很清楚——即近视；如果在视网膜后，远处的东西就很清楚——即远视。

M: Right. Now because they are bent² more, the rays that pass near the edge of the pupil are blurred³ more. If you can eliminate these edge rays then you will have less blurring⁴.

正确！现在由于它们太过倾斜了，经过瞳孔边缘的光线就会被模糊掉。如果你能消除这些边缘的光线，你就会看的清楚些。

F: That must be what squinting does.

那就是眯眼睛的效果。

M: Exactly.Squinting uses the eyelids⁵ to block the blurred rays that enter the pupil near its edge. Squinting is not a long-term solution to poor vision, but it sometimes helps in a pinch.

完全正确。眯眼睛（的时候），眼皮阻挡了进入瞳孔边缘地区的光线。可这只是在必要时有些帮助，并不是一个解决视力差的方法。

M: Ah, I think we can end this field trip now. I've learned about all I can stand for one day.

阿，我觉得我们现在可以结束这次旅程了。我已经学到了一天能承受的量了。

1 squinting   

斜视( squint的现在分词 )； 眯着眼睛； 瞟； 从小孔或缝隙里看

参考例句：

• "More company," he said, squinting in the sun. "那边来人了，"他在阳光中眨巴着眼睛说。
• Squinting against the morning sun, Faulcon examined the boy carefully. 对着早晨的太阳斜起眼睛，富尔康仔细地打量着那个年轻人。

2 bent   

n.爱好，癖好；adj.弯的；决心的，一心的

参考例句：

• He was fully bent upon the project.他一心扑在这项计划上。
• We bent over backward to help them.我们尽了最大努力帮助他们。

3 blurred   

v.（使）变模糊( blur的过去式和过去分词 )；（使）难以区分；模模糊糊；迷离

参考例句：

• She suffered from dizziness and blurred vision. 她饱受头晕目眩之苦。
• Their lazy, blurred voices fell pleasantly on his ears. 他们那种慢吞吞、含糊不清的声音在他听起来却很悦耳。 来自《简明英汉词典》

4 blurring   

n.模糊，斑点甚多，（图像的）混乱v.（使）变模糊( blur的现在分词 )；（使）难以区分

参考例句：

• Retinal hemorrhage, and blurring of the optic dise cause visual disturbances. 视网膜出血及神经盘模糊等可导致视力障碍。 来自辞典例句
• In other ways the Bible limited Puritan writing, blurring and deadening the pages. 另一方面，圣经又限制了清教时期的作品，使它们显得晦涩沉闷。 来自辞典例句

5 eyelids   

n.眼睑( eyelid的名词复数 )；眼睛也不眨一下；不露声色；面不改色

参考例句：

• She was so tired, her eyelids were beginning to droop. 她太疲倦了，眼睑开始往下垂。
• Her eyelids drooped as if she were on the verge of sleep. 她眼睑低垂好像快要睡着的样子。 来自《简明英汉词典》