BOB DOUGHTY: This is SCIENCE IN（I和E之间有小y） THE NEWS, in VOA Special English. I’m Bob Doughty.
FAITH LAPIDUS: And I’m Faith Lapidus. This week, we tell about vitamins.
BOB DOUGHTY: Many jobs must be done （似乎读过了。）with two people. One person takes the lead. The（应该是长音i，不是额吧） other helps. It is this cooperation that brings success.
So（似乎o嘴巴没张圆噘出） it is with the human body. Much of our （似乎没卷舌）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（没卷舌） helpers in the job of good health are the substances we call vitamins.
