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BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. I’m Bob Doughty（似乎听到儿话音，没有r，不应该有儿话音的）.

FAITH LAPIDUS: And I’m Faith Lapidus. This week（长音i似乎不够到位，应该是类似“一”的音）, we tell about vitamins.

(MUSIC)

BOB DOUGHTY: Many jobs must be done with two people. One person takes（/ei/没发好，听起来像/艾/的音，建议看美语正音） the lead. The other helps. It is this cooperation（两个音节，似乎你miss了一个，愚公给我修改的回帖中有音标，你也听听dictionary.com）that brings success.

So it is with the human(u不到位。建议你练练元音） 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（没有卷舌） helpers in the job of good health are the substances we call vitamins.（V似乎牙齿没咬下嘴唇）