Yeast is essential for the fermentation that produces alcohol.
酵母对酿酒的发酵是必要的。
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。
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。
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。
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。
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。
Surplus snowfall is essential for a glacier to develop.
过剩的降雪是冰川形成的必要条件。
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。
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。
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。
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。
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。
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。
As you can see, the ability to do well on things you don’t like is essential for success.
从文中可以看出，做好你不喜欢的工作的能力对于你走向成功是至关重要的。
While the processor might be the workhorse of a machine, graphical capability is essential for games.
处理芯片是一台机器的马达，对于游戏来讲，图像处理功能是必需的。
Comprehending the way abstract ideas relate to one another is essential for reading.
对于阅读，领会抽象概念相互联系的方法是很重要的。
Adequate stimulation and nutrition are essential for development during the first three years of life.
在生命头三年，适当激励和良好营养是幼儿茁壮成长的关键。
The serializer is not technically part of the XSLT processor, but it is essential for practical use.
从技术上看，串行化器并不是XSLT处理器的一部分，但它在实际使用中是必不可少的。
One target: neodymium, a rare-earth essential for magnets used in everything from microphones to wind turbines.
有一个目标是：钕，一种稀土元素，用于从话筒到风力涡轮机等一切使用磁铁的产品。
A free operating system is essential for people to be able to use computers in freedom.
一个免费的操作系统是人们可以自由使用计算机的基础。
Environmental integrity is essential for both the overall climate regime and the carbon market.
环境保全对于整个气候制度和碳市场两方面都至关重要。
Calcium is essential for healthy heart muscles and regulation of the heartbeat.
钙对心脏肌肉的健康至关重要，它调节心跳着的频率。
Data should not be duplicated unless duplication is essential for practical reasons.
除非有实际的原因需要进行复制，否则不能够对数据进行复制。
Due to sheer scale and complexity, proper configuration management practices are essential for large organizations.
依据其规模与复杂度来说，适当的配置管理实践对于大企业是十分必要的。
Although reporting takes time and resources, it is essential for providing project visibility to upper management.
尽管报告消耗时间和资源，但是向高层管理人员提供项目可见性是很关键的。
Although reporting takes time and resources, it is essential for providing project visibility to upper management.
尽管报告消耗时间和资源，但是向高层管理人员提供项目可见性是很关键的。
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