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硒是一种半金属元素,1957年经专家证实,它是动物体内必要的微量元素。1975年科学家又进一步证实,它是人体“生命攸关的元素。”
Selenium is a semi-metallic element, confirmed by experts in 1957, it is necessary trace elements in animals. In 1975, scientists further confirmed that it is “a vital element of the human body.”