Experience is essential for this job.
对于这个工作，经验是非常重要的。
A rich and varied cultural life is essential for this couple.
丰富多彩的、多样化的文化生活对于这对夫妇而言是必不可少的。
Yeast is essential for the fermentation that produces alcohol.
酵母对酿酒的发酵是必要的。
Elections are essential for the sustenance of parliamentary democracy.
选举制度是维持议会民主所必不可少的。
Participating in the arts is essential for child development; encouraging children to express themselves in constructive ways could help to form healthy emotional responses in later life.
参与艺术活动对儿童发展至关重要；鼓励儿童以建设性的方式表达自己，有助于在以后的生活中形成健康的情绪反应。
They prevent fish migrations and change aquatic habitats essential for native species.
它们阻止了鱼类迁徙，并改变了对本地物种至关重要的水生栖息地。
It's true that high-school coding classes aren't essential for learning computer science in college.
诚然，高中编程课对于在大学学习计算机科学来说并不是必需的。
Indeed, it may be for any of the factors, physical as well as biotic, that are essential for organisms.
事实上，竞争对象可能是生命体所必须的任何生物或非生物因素。
Maintaining harmony at home is essential for the well-being of an individual, a couple and their offspring, and even the society.
维持家庭的和谐，对个人、夫妻、后代乃至整个社会都是至关重要的。
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。
Dunbar is not against online relationships, but he maintains that face-to-face interaction is essential for the initial creation of true friendship and connections.
邓巴并不反对线上关系，但他坚持认为，面对面的交流对于最初建立真正的友谊和联系至关重要。
What parents do, in other words, is of deep concern to the state, for the obvious reason that caring for children is not only morally urgent but essential for the future of society.
换句话说，父母所做的事是国家所深切关注的，原因很明显，照顾孩子不仅在道德上是非常需要的而且对社会的未来至关重要。
The possession of a passport is essential for foreign travel.
出国旅行必须持有护照。
Breathable, waterproof clothing is essential for most outdoor sports.
大多数户外运动衣服必须透气且防水。
Surplus snowfall is essential for a glacier to develop.
过剩的降雪是冰川形成的必要条件。
The ability of a species to compete and adapt to a gradually changing environment is not the only ability that is essential for survival.
一个物种竞争和适应逐渐变化的环境的能力并不是生存所必需的唯一能力。
Oxygen is essential for the metabolic process known as cell respiration that allows cells to efficiently harvest energy from organic food.
氧气在细胞呼吸的新陈代谢过程中是必不可少的，它能使细胞有效地从有机食物中获取能量。
People with Hunter syndrome lack the enzyme iduronate-2-sulfatase, which is essential for recycling complex carbohydrates.
患有Hunter综合征的人缺乏艾杜糖醛酸2-硫酸酯酶，这对于回收复杂的碳水化合物至关重要。
Thinking is essential for human beings.
思考对人至关重要。
In many cases, it is essential for success.
在许多情况下，这是成功的必要条件。
Fat is essential for every cell in the body.
脂肪对于身体细胞来说至关重要。
Water is essential for all healthy body functions.
水对于所有健康的身体功能运作是必需的。
Fresh water is essential for life, with no substitute.
淡水是生命的必需品，而且无可替代。
Learning to banish boredom is essential for Happiness.
学习如何驱除厌倦感对我们的快乐极其重要。
It was very frustrating for me - very essential for her.
对我来说，是沮丧的一天，而对她来说这样做非常必要。
Sleep is essential for peace of mind and health of body.
对于心里的平静和身体的健康，睡眠至关重要。
Adequate sleep is essential for joy and vitality in life.
充分的睡眠对生活中的欢乐和活力是至关重要的。
Phosphorus is essential for healthy skin, hair and nerves.
磷对人体中健康的皮肤，头发和神经必不可少。
Phosphorus is essential for healthy skin, hair and nerves.
磷对人体中健康的皮肤，头发和神经必不可少。
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