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1·Experience is essential for this job.

对于这个工作，经验是非常重要的。《牛津词典》

2·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。《柯林斯英汉双解大词典》

3·Yeast is essential for the fermentation that produces alcohol.

酵母对酿酒的发酵是必要的。《柯林斯英汉双解大词典》

4·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。《牛津词典》

5·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。

6·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。

7·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。

8·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。

9·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。

10·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。