VOA慢速英语 维他命:维持健康的保障
维他命:维持健康的保障
Vitamins Are Important to Good Health
VOICE ONE:
This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Doughty.
VOICE TWO:
And I'm Faith Lapidus. This week, we tell about vitamins.
(MUSIC)
VOICE ONE:
Many jobs must be done with two people. One person takes the lead. The other helps. It is this cooperation that brings success.
So it is with the human body. Much of our good health depends on the cooperation between substances. When they work together, chemical reactions take place smoothly. Body systems are kept in balance.
Some of the most important helpers in the job of good health are the substances we call vitamins.
VOICE TWO:
The word "vitamin" dates back to Polish scientist Casimir Funk in nineteen-twelve. He was studying a substance in the hull that covers rice. This substance was believed to cure a disorder called beriberi.
Funk believed the substance belonged to a group of chemicals known as amines. He added the Latin word "vita," meaning life. So he called the substance a "vitamine" -- an amine necessary for life.
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