VOA双语新闻：4、激光技术弥合伤口，天衣无缝不留痕
时间：2019-01-19 作者：英语课 分类：VOA双语新闻 2015年4月
激光技术弥合伤口，天衣无缝不留痕
All surgical 1 patients want their wounds to heal quickly with the least possible scarring. But traditional stitches, clips and more modern chemical glues all have their own disadvantages. Israeli scientists say they have developed a laser that bonds tissue in a way which leaves almost no trace.
所有的外科手术患者都希望伤口迅速弥合还不留疤。不过，不管是传统的针线缝合还是更现代化一些的化学粘合都有不尽如人意之处。以色列的科学家们说，他们发明了一种激光，可以几乎不留痕迹地弥合伤口。
For decades, doctors have known that cuts in living tissue can be “welded” together by heat. But keeping the temperature of the welding tool constant proved to be a daunting 2 problem, according to Abraham Katzir, head of Tel Aviv University’s Applied 3 Physics Department.
据特拉维夫大学应用物理系主任亚伯拉罕·卡齐尔（Abraham Katzir）说，几十年来，医生们都知道，活体组织上的裂口可以用高温“焊接”在一起。但是保持焊接工具的温度一直是一个难题。
"If you heat a spot on an incision 4 to temperatures lower than say 50 or 55 degrees centigrade nothing happens. If you are above 65 degrees than you cause scarring," he said.
卡齐尔说，“你对着伤口上的一个点加热，如果温度低于50、55摄氏度，那什么作用也不起。但是如果温度高于65度，就又会留疤。”
A team led by Katzir developed a laser that can project a spot of infrared 5 light, or heat, and at the same time precisely 6 control the temperature of the targeted tissue.
由卡齐尔领导的这个小组发明了一种激光，它可以投射出一个红外光点，也就是热源，同时又能准确地控制被加热组织的温度。
"We carried out experiments on a large number of tissues, on skin, on cornea, on blood vessels 7 and so on and we have gradually improved," said Katzir.
卡齐尔说，“我们在大量的组织上做实验，在皮肤上，眼角膜上，血管上等等，我们在逐渐地进步。”
The heat transmitted through a single optical fiber 8 makes the molecules 9 of collagen - the main structural 10 protein of all connective tissues - bond and close the wound.
高温通过一根光纤传导，把胶原蛋白分子粘合在一起，从而弥合伤口。胶原蛋白是所有结缔组织的主要结构蛋白。
Ichilov Medical Center ophthalmic surgeon David Versano says this makes the new tool suitable for microsurgery on blood vessels and nerves. The method has been used successfully to heal incisions 11 in corneas taken from dead cows.
伊契洛夫医疗中心眼科医生大卫?瓦尔萨诺（David Versano）说，这使得这项新工具适用于在血管和神经上所做的显微手术。此法已被成功用于在从死牛身上取下的眼角膜上弥合伤口。
“The advantages of the procedure are that we can get bonding to be probably much stronger than with sutures," he said. "We hope that the scarring will also be less than with sutures and eventually we'll get the safety of the procedure to be better."
“它的优点在于我们可以让粘接变得比用针线缝合牢固得多。我们希望留下的疤痕也能比针线缝合更小，最终我们还将提升这项技术的安全性。”
Wounds of 10 human patients treated with the laser technique have healed with minimal 12 scarring. Researchers say with additional refinements 13, the new surgical tool may soon be in wider use.
十位病患身上的伤口经激光治疗后已经弥合，疤痕也很小。研究人员称，再经过一些改进之后，这项新的手术工具可能将很快推广。
- He performs the surgical operations at the Red Cross Hospital.他在红十字会医院做外科手术。
- All surgical instruments must be sterilised before use.所有的外科手术器械在使用之前，必须消毒。
- They were faced with the daunting task of restoring the house.他们面临着修复房子的艰巨任务。
- Starting a new job can be a daunting prospect.开始一项新工作有时会让人望而却步。
- She plans to take a course in applied linguistics.她打算学习应用语言学课程。
- This cream is best applied to the face at night.这种乳霜最好晚上擦脸用。
- The surgeon made a small incision in the patient's cornea.外科医生在病人的眼角膜上切开一个小口。
- The technique involves making a tiny incision in the skin.这项技术需要在皮肤上切一个小口。
- Infrared is widely used in industry and medical science.红外线广泛应用于工业和医学科学。
- Infrared radiation has wavelengths longer than those of visible light.红外辐射的波长比可见光的波长长。
- It's precisely that sort of slick sales-talk that I mistrust.我不相信的正是那种油腔滑调的推销宣传。
- The man adjusted very precisely.那个人调得很准。
- The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
- All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》
- The basic structural unit of yarn is the fiber.纤维是纱的基本结构单元。
- The material must be free of fiber clumps.这种材料必须无纤维块。
- The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
- Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。
- The storm caused no structural damage.风暴没有造成建筑结构方面的破坏。
- The North American continent is made up of three great structural entities.北美大陆是由三个构造单元组成的。
- Cruciate incisions heal poorly and are not required. 不需要愈合差的十字形切口。 来自辞典例句
- After two days red incisions appear on their bodies. 一两天内身体会出现粉红色的损伤。 来自电影对白
- They referred to this kind of art as minimal art.他们把这种艺术叫微型艺术。
- I stayed with friends, so my expenses were minimal.我住在朋友家，所以我的花费很小。
- The new model has electric windows and other refinements. 新型号有电动窗和其他改良装置。 来自《简明英汉词典》
- It is possible to add a few useful refinements to the basic system. 对基本系统进行一些有益的改良是可能的。 来自《简明英汉词典》