學(xué)個(gè)詞 Learn A Word:2280_fluoride

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　　今天我們要學(xué)的詞是 fluoride. Fluoride 氟化物。The U.S. government is lowering the recommended amount of fluoride added to drinking water for the first time in more than 50 years. 美國(guó)政府50多年來(lái)首次降低飲用水建議添加的氟化物的含量。有關(guān)官員解釋說(shuō)，People may get too much fluoride these days because it is also added to toothpaste, mouthwash and other products. 現(xiàn)在牙膏，漱口液等產(chǎn)品內(nèi)也添加了氟化物，這種情況可能會(huì)使人們攝取過多的氟化物。好的，今天我們學(xué)習(xí)的詞是 fluoride, fluoride, fluoride...