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（单词翻译）

 This is scientific American sixty seconds science. I am Amy Kraft. Got a minute?

 
Sweat potatoes contains fiber1, vitamin A and calcium2, but the way that scientists think they can make them even more healthful is literally3 shocking. Researchers found that giving a jolt4 of electricity to sweet potatoes increased the level of antioxidants known as polyphenols by sixty percent. The investigators5 placed sweet potatoes in the solution of sodium6 chloride. They found that zero point two amps direct current gave the potatoes nearly one and a half times more antioxidants than potatoes that weren't shocked. The research was presented at the national meeting of the American Chemical society. 
 
It seems that electric zap stressed the potatoes into produce more polyphenols as protective mechanism7. And the treatment did not sacrifice flavor. Previous research has shown that electrically super charging white potatoes increases antioxidant levels. So perhaps it is only a matter of time before other fruits and vegetables get shock therapy, too. 

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1 fiber NzAye     
n.纤维，纤维质
参考例句：
  • 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。
2 calcium sNdzY     
n.钙(化学符号Ca)
参考例句：
  • We need calcium to make bones.我们需要钙来壮骨。
  • Calcium is found most abundantly in milk.奶含钙最丰富。
3 literally 28Wzv     
adv.照字面意义，逐字地；确实
参考例句：
  • He translated the passage literally.他逐字逐句地翻译这段文字。
  • Sometimes she would not sit down till she was literally faint.有时候，她不走到真正要昏厥了，决不肯坐下来。
4 jolt ck1y2     
v.（使）摇动，（使）震动，（使）颠簸
参考例句：
  • We were worried that one tiny jolt could worsen her injuries.我们担心稍微颠簸一下就可能会使她的伤势恶化。
  • They were working frantically in the fear that an aftershock would jolt the house again.他们拼命地干着，担心余震可能会使房子再次受到震动。
5 investigators e970f9140785518a87fc81641b7c89f7     
n.调查者，审查者( investigator的名词复数 )
参考例句：
  • This memo could be the smoking gun that investigators have been looking for. 这份备忘录可能是调查人员一直在寻找的证据。
  • The team consisted of six investigators and two secretaries. 这个团队由六个调查人员和两个秘书组成。 来自《简明英汉词典》
6 sodium Hrpyc     
n.（化）钠
参考例句：
  • Out over the town the sodium lights were lit.在外面，全城的钠光灯都亮了。
  • Common salt is a compound of sodium and chlorine.食盐是钠和氯的复合物。
7 mechanism zCWxr     
n.机械装置；机构，结构
参考例句：
  • The bones and muscles are parts of the mechanism of the body.骨骼和肌肉是人体的组成部件。
  • The mechanism of the machine is very complicated.这台机器的结构是非常复杂的。

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