Studies demonstrate that vegetables grown in season and ripened on the tree are far higher in essential nutrients than those grown in greenhouses and ripened by laser.
研究表明，在当季生长并在树上成熟的蔬菜比那些在温室里生长并在激光刺激下成熟的蔬菜所含的必需营养要高得多。
For states, rising healthcare costs are squeezing their budgets, leading to cuts in essential services and tax rises.
对各州来说，不断增长的医疗支出令它们的预算捉襟见肘，它们只得减少基本服务并进行增税。
Processed foods, rich in fats and sugar and low in essential nutrients, become the cheapest way to fill a hungry stomach.
富含脂肪和糖类并缺少必要营养素的加工食品成了充饥的最廉价方式。
The result: processed foods, full of fat and sugar and low in essential nutrients, become the cheapest way to fill a hungry stomach.
结果，充满脂肪和糖以及缺乏基本营养素的加工食品成为最低廉的充饥方式。
Cities also tend to promote unhealthy lifestyles, like cheap and convenient diets that depend on processed foods rich in fats and sugar, yet low in essential nutrients.
城市也往往促进不健康的生活方式，例如依赖于富含脂肪和糖但缺少必要营养素的加工食品的廉价和方便饮食。
The globalization of food marketing and distribution has brought processed foods, rich in fat, sugar, and salt, and low in essential nutrients, into every corner of the world.
全球化的食品营销和分发把高脂、高糖和高盐、但缺乏必要营养素的加工食品带到世界上的每一个角落。
At present the needs of women with common perinatal mental disorders are unrecognized and not attended to and their participation in essential antenatal preventive care appears to be compromised.
目前，对于患有围产期常见精神障碍的妇女来说，她们的需求还未得到人们的充分认识和关注，并且让她们参加必要的产前预防保健护理似乎十分困难。
In her first book she explained the role of vegetable fibres, vitamins, minerals, and other essential nutrients.
在她第一本书中，她解释了植物纤维、维生素、矿物质和其他重要营养物质的作用。
Training in interpersonal skills is essential.
各种人际交往技巧的训练是非常必要的。
There is considerable and justified concern that the United States is falling behind much of the rest of the developed world in these essential disciplines.
人们有合理正当的理由担心，美国在这些基本学科上落后于其他许多发达国家。
In order to achieve a successful outcome or reward, some level of risk is almost always essential.
为了获得成功的结果或回报，一定程度的风险几乎总是必不可少的。
Design courses, then, should be an essential element in engineering curricula.
因此，设计课程应该成为工程课程的一个基本元素。
It is only when the faculty of smell is impaired for some reason that we begin to realise the essential role the sense of smell plays in our sense of well-being.
"只有当嗅觉能力因为某种原因受到损害时，我们才开始明白嗅觉对健康的重要作用。
They played an essential role in raising awareness and interest among the rural communities.
它们在提高农村社区的认识和兴趣方面发挥了重要作用。
They point out the idea that it is the obedience that plays the essential role in working.
他们指出，顺从思想在工作中起着至关重要的作用。
Crying as an expression of feeling is unique to humans and has played an essential role in human evolution and the development of human cultures.
哭泣作为一种情感的表达是人类独有的，这在人类进化和人类文化的发展中发挥了重要的作用。
But crying as an expression of feeling is unique to humans and has played an essential role in human evolution and the development of human cultures.
但哭泣作为一种情感的表达是人类独有的，这在人类进化和人类文化的发展中发挥了重要的作用。
Predators are an essential factor in maintaining communities that are rich and diverse in species.
捕食者是维持群落物种丰富多样的一个重要因素。
For architects, computer-aided design has become essential but in some ways has cheapened the design process.
对于建筑师来说，计算机辅助设计已经变得至关重要，但它让设计过程变得廉价了。
As the family increases in size, it is essential to add more insurance on the breadwinner to protect the dependents.
随着家庭规模的扩大，为养家糊口的人增加保险以保护其家属是有必要的。
Determining where we are in relation to our surroundings remains an essential skill for our survival.
确定我们与周围环境的关系仍然是我们生存的基本技能。
"It is the recognition of a child's attempt, or the process in which they achieved something, that is essential," she says.
她说：“认可孩子的尝试，或是他们取得成就的过程，才是至关重要的。”
Both were essential and neither was superior to the other; they were not in conflict but complementary, each with its own sphere of competence.
两者都是必不可少的，没有一个是优于另一个的；它们互不冲突反而相辅相成，各有其本身的职权范围。
Energy is an essential resource across the entire food production cycle, with estimates showing an average of 7-10 calories of input being required in the production of one calorie of food.
在整个食品生产周期中，能量是一种必不可少的资源，据估计，生产一卡路里的食品平均需要7-10卡路里的投入。
So we've been talking about nutrients, the elements in the environment that are essential for living organisms to develop, live a healthy life, and reproduce.
所以我们一直在讨论营养，环境中的元素对于生物体的发展，健康的生活和繁殖是必不可少的。
But most experts agree that some research activity is essential to keep the staff and their students in touch with the latest developments in their subjects.
但是，大多数专家认为，为了让教职工和他们的学生了解他们学科的最新发展，这些研究活动是至关重要的。
They can attend to several things at once in the mental scratch pad called working memory, an essential skill in this era of multitasking.
他们可以在大脑的“工作记忆”区同时处理几件事，这是这个多任务时代的一项基本技能。
The critics immediately homed in on the group's essential members.
批评家们立刻就把全部注意力集中在该集团的关键成员们身上。
We all seem to agree that a college education is wonderful, and yet strangely we worry when we see families investing so much in this supposedly essential good.
我们似乎都同意大学教育是极好的，但奇怪的是，当我们看到家庭在这个本应是必不可少的好东西上投入如此之多时，我们却感到担忧。
We all seem to agree that a college education is wonderful, and yet strangely we worry when we see families investing so much in this supposedly essential good.
我们似乎都同意大学教育是极好的，但奇怪的是，当我们看到家庭在这个本应是必不可少的好东西上投入如此之多时，我们却感到担忧。
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