题目

英语翻译
Zinc is one of about 20 elements necessary for good health.It is present in the body in very small amount,but it makes it possible for important chemical actions to be carried out in cells.Scientists are just beginning to discover how zinc and other elements work.
Researchers first studied zinc as a way to speed recovery.Dr.Waltor Powys,formerly with the United States Air Force,noted that the laboratory animals recovered faster when some substances were added to their food.One of these substances was zinc.Dr.Powys later tested the zinc treatment on an American airman recovering from medical operations.The airman who received zinc sulphate recovered ion half of the usual time.Other doctors studied persons who had a number of strange disorders.The doctors learned that all of these problems were caused by a lack of zinc in the body.They treated these disorders successfully by giving the patients zinc sulphate.
The amount of zinc in the body can be found by examine the blo

提问时间：2020-07-18

答案

锌是保持身体健康的20种必需元素之一.它在体内含量很少,但能保证细胞内重要化学反应的进行.科学家们只是初步发现了锌和其他元素的作用机理.研究人员最初研究锌是作为加快恢复速度的一种方式.前美国空军Waltor Powys...