茶与牛奶一起喝有害健康

 　　Tea has complex compounds called polyphenols which are believed to help the arteries¹ to relax or dilate², thus enabling a smoother flow of blood.

　　茶中含有一种叫多酚的复杂混合物。这种物质据信能帮助放松或扩张动脉，从而使血流更为平缓。

　　Scientists tested black Darjeeling tea on 16 healthy women volunteers aged³ more than 50.

　　科学家们对16位饮用了大吉岭红茶，年龄在50岁以上的健康女性志愿者做了测试。

　　When the women drank half a litre (0.9 of a pint) of tea, their arteries relaxed significantly more than when they drank hot water or tea with milk--tea in which skimmed milk, comprising 10 percent of the drink's volume, was added.

　　这些女性饮用了半升（0.9品脱）的茶，与饮用热水，奶茶的时候相比，她们的动脉得到了显著的放松。这里说的奶茶指掺有相当于饮料总体积10%的脱脂奶的茶。

The study points the finger of blame at three casein proteins in the milk. These are thought to adhere to a kind of polyphenols known as catechins, preventing them from carrying out their health-making work.

　　这项研究指出，影响茶发挥作用的罪魁祸首为牛奶中的三种酪蛋白。研究者认为它们会附着在一种叫儿茶酚的多酚上，使之无法发挥保健功效。

　　This could explain why Britain, a nation passionate⁴ about tea-drinking but where almost everybody adds milk to their cup, fails to make headway against cardiovascular disease.

　　这就是英国——这个热爱饮茶，却几乎人人都往茶中加牛奶的国度——在对抗心血管疾病方面并无进展的原因。

1 arteries   

n.动脉( artery的名词复数 )；干线，要道

参考例句：

• Even grafting new blood vessels in place of the diseased coronary arteries has been tried. 甚至移植新血管代替不健康的冠状动脉的方法都已经试过。 来自《简明英汉词典》
• This is the place where the three main arteries of West London traffic met. 这就是伦敦西部三条主要交通干线的交汇处。 来自《简明英汉词典》

2 dilate   

vt.使膨胀，使扩大

参考例句：

• At night,the pupils dilate to allow in more light.到了晚上，瞳孔就会扩大以接收更多光线。
• Exercise dilates blood vessels on the surface of the brain.运动会使大脑表层的血管扩张。

3 aged   

adj.年老的，陈年的

参考例句：

• He had put on weight and aged a little.他胖了，也老点了。
• He is aged,but his memory is still good.他已年老，然而记忆力还好。

4 passionate   

adj.热情的，热烈的，激昂的，易动情的，易怒的，性情暴躁的

参考例句：

• He is said to be the most passionate man.据说他是最有激情的人。
• He is very passionate about the project.他对那个项目非常热心。