神马作文网英语高手帮忙翻译文章,急~
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英语高手帮忙翻译文章,急~
The environment in which human beings exist is chemically complex.No part of that environment,however,is as chemically complex as the food and beverages humans routinely consume.The human diet includes substances that provide nutrition,such as proteins,carbohydrates,fast,vitamins,and minerals. The human diet also includes other natural parts of plant and animalproducts, mostly organic(carbon containing) chemicals.These chemicals add flavor and aroma to food.Coffee,for example, contains nearly two hundred organic chemicals--all natural parts of the coffee bean.There are hundreds of thousands of other non-nutrtive food substances that people eat.Few of them have been studied.
Human beings have never been content to leave their diets alone.Since ancient times they have added various substances to theri food.They have used both natural and synthetic substances to change theri food and to improve its taste and texture.They have also added substances to add sweetness,color,or fat to their food.In more recent times,people have introduced new food processing and packaging methods.Most of these methods rely on chemical substances that are added to food products to preserve them.Usually these chemicals are added in small amounts.
Problems arise when food crops are treated with pesticides.Sometimes these pesiticides remain on the food as a residue(a thin covering). Typically,pesticides are not beneficial for humans animal care sometimes remain in meat,milk,and eggs.these additives increase the numbers of chemicals present in the human diet.
Finally,there are some substances that contaminate the diet.Various microbial agents(such as bacteria)can contaminate improperly treated or protected food.Some microbes can cause serious illness.Industrial chemicals such as lead,mercury,and PCBs can also enter the food chain.These chemicals are dangerous although many foods naturally contain small amounts of some of these substances.
There are six main questions that must be answered to understand the role of diet in human health:(1)What levels of calorie and nutirent intake increase health benefits and lower the risk of disease?(2)What natural,non-nutritive parts of the diet pose risks to health --or improve health--and at what levels?(3)What contaminants--either natural or industrial in origin--are dangerous?(4)Do substances added to the human diet pose health risks?(5)Which people are most affected by substances added to the diet,and in what amounts?What factors--such as age,sex,genetics-- affect an individual's risk of being affected by factors in the diet?(6)What diet is best for promoting health and preventing disease?
The environment in which human beings exist is chemically complex.No part of that environment,however,is as chemically complex as the food and beverages humans routinely consume.The human diet includes substances that provide nutrition,such as proteins,carbohydrates,fast,vitamins,and minerals. The human diet also includes other natural parts of plant and animalproducts, mostly organic(carbon containing) chemicals.These chemicals add flavor and aroma to food.Coffee,for example, contains nearly two hundred organic chemicals--all natural parts of the coffee bean.There are hundreds of thousands of other non-nutrtive food substances that people eat.Few of them have been studied.
Human beings have never been content to leave their diets alone.Since ancient times they have added various substances to theri food.They have used both natural and synthetic substances to change theri food and to improve its taste and texture.They have also added substances to add sweetness,color,or fat to their food.In more recent times,people have introduced new food processing and packaging methods.Most of these methods rely on chemical substances that are added to food products to preserve them.Usually these chemicals are added in small amounts.
Problems arise when food crops are treated with pesticides.Sometimes these pesiticides remain on the food as a residue(a thin covering). Typically,pesticides are not beneficial for humans animal care sometimes remain in meat,milk,and eggs.these additives increase the numbers of chemicals present in the human diet.
Finally,there are some substances that contaminate the diet.Various microbial agents(such as bacteria)can contaminate improperly treated or protected food.Some microbes can cause serious illness.Industrial chemicals such as lead,mercury,and PCBs can also enter the food chain.These chemicals are dangerous although many foods naturally contain small amounts of some of these substances.
There are six main questions that must be answered to understand the role of diet in human health:(1)What levels of calorie and nutirent intake increase health benefits and lower the risk of disease?(2)What natural,non-nutritive parts of the diet pose risks to health --or improve health--and at what levels?(3)What contaminants--either natural or industrial in origin--are dangerous?(4)Do substances added to the human diet pose health risks?(5)Which people are most affected by substances added to the diet,and in what amounts?What factors--such as age,sex,genetics-- affect an individual's risk of being affected by factors in the diet?(6)What diet is best for promoting health and preventing disease?
人存在的环境是化工复杂的.那个环境的部分,然而,不是一样化工复杂的,象食物和饮料人定期地消耗.人的饮食包括提供营养,例如蛋白质,碳水化合物,快速,维生素和矿物的物质.人的饮食也包括其他自然设备部件和animalproducts,主要有机(包含的碳)化学制品.这些化学制品增加味道和芳香到食物.咖啡,例如,包含几乎二百种有机化学制品--咖啡豆的所有自然部分.有人们吃的数十万种其他non-nutrtive食物物质.少数他们被学习了.
人从未是满意不理会他们的饮食.因为古老时期他们增加了各种各样的物质到他们的食物.他们使用自然和综合性物质改变他们的食物和改进它的口味和纹理.他们也增加物质增加甜、颜色或者油脂到他们的食物.在最近时期,人们介绍了新的食品加工和包装方法.大多这些方法依靠增加到食品保存他们的化学物质.通常这些化学制品在少量增加.当食用农作物对待与杀虫剂时,Problems升起.有时这些pesiticides在食物作为残滓(稀薄的覆盖物).一般,杀虫剂为动物护养在肉有时依然是的人,牛奶不是有利的,并且eggs.these添加剂增加化学制品的数量当前在人的饮食.
Finally,那里是沾染饮食的有些物质.各种各样的微生物代理(例如细菌)可能沾染不适当地被对待的或被保护的食物.有些微生物能导致病魔.工业化学制品例如主角、水银和PCBs可能也进入食物链.这些化学制品是危险的,虽然许多食物自然地包含少量其中一些物质.
There是必须回答了解饮食的角色在人类健康的六个主要问题：(1)什么成水平卡路里和nutirent入口增量保健福利并且降低疾病的风险?(2)饮食的什么自然,没有营养部分形成健康风险 --或者改进健康--并且在什么水平?(3)什么污染物--自然或工业在起源--是危险的?(4)物质是否增加到人的饮食形成健康风险?(5)哪些人民受物质是最影响增加了到饮食,并且在什么数额?什么析因--例如年龄,性,遗传学-- 影响影响的个体的风险受在饮食的因素的?(6)什么饮食为促进健康和防止疾病是最佳?
人从未是满意不理会他们的饮食.因为古老时期他们增加了各种各样的物质到他们的食物.他们使用自然和综合性物质改变他们的食物和改进它的口味和纹理.他们也增加物质增加甜、颜色或者油脂到他们的食物.在最近时期,人们介绍了新的食品加工和包装方法.大多这些方法依靠增加到食品保存他们的化学物质.通常这些化学制品在少量增加.当食用农作物对待与杀虫剂时,Problems升起.有时这些pesiticides在食物作为残滓(稀薄的覆盖物).一般,杀虫剂为动物护养在肉有时依然是的人,牛奶不是有利的,并且eggs.these添加剂增加化学制品的数量当前在人的饮食.
Finally,那里是沾染饮食的有些物质.各种各样的微生物代理(例如细菌)可能沾染不适当地被对待的或被保护的食物.有些微生物能导致病魔.工业化学制品例如主角、水银和PCBs可能也进入食物链.这些化学制品是危险的,虽然许多食物自然地包含少量其中一些物质.
There是必须回答了解饮食的角色在人类健康的六个主要问题：(1)什么成水平卡路里和nutirent入口增量保健福利并且降低疾病的风险?(2)饮食的什么自然,没有营养部分形成健康风险 --或者改进健康--并且在什么水平?(3)什么污染物--自然或工业在起源--是危险的?(4)物质是否增加到人的饮食形成健康风险?(5)哪些人民受物质是最影响增加了到饮食,并且在什么数额?什么析因--例如年龄,性,遗传学-- 影响影响的个体的风险受在饮食的因素的?(6)什么饮食为促进健康和防止疾病是最佳?