英语翻译

题目

英语翻译
Salt is a principal wicked substance.Salt,sodium chloride(氯化钠）,40 percent of which is sodium(纳),is an element essential to human body.But sodium also boosts blood pressure.It makes the body retain fluids;greater fluid retention increases total blood volume,and this increase raises blood pressure.Where salt is uesd freely,a large proportion of the population develops chronic high blood pressure,which is a primary factor in heart diease and sreoke.Farmers in northen Japan traditionally preserve their food with salt.They consume as much as six teaspoons a day,and 40 percent of them have high blood pressure.Among the Eskimos of Greenland,however,who consume little salt,high blood pressure is almost unheard of.
The body of an adult needs only about 200 milligrams of sodium a day,the amount in 500 milligrams,or 1/10 of teaspoon,of salt.But the average American consumes about 12,000 milligrams,or more than two teaspoons,of salt a day,which supplies 24 times as much sodium as nece

答案

人工：盐是一种重要的有害物质.盐,氯化钠,40%为钠,是人体必不可少的.但钠也会使血压上升.它帮助身体保持水分（翻译的不好^-^,这里是从渗透压的角度说的）,更大的体液潴留量增加了血液总量,并且这种增加升高了血压.在...