Hope is as essential to your life as air and water.
希望就如空气和水，是人生的必需品。
However essential, farming is not the most lucrative use of water.
无论粮食是多么必要，耕地用水的效益是不高的。
As we all know, water is essential in our daily life.
我们都知道水对于日常生活的重要性。
As 65 percent of the human body, water is essential to people.
人身体里65%是水，它是人所必不可少的。
Fresh water is essential for life, with no substitute.
淡水是生命的必需品，而且无可替代。
Like food, air, and water, energy is essential to human existence.
像食物、空气和水一样，能源在人类的生活中必不可少。
However, the report highlights that drinking plenty of water is still essential to good health.
不过，报告强调说，喝大量的水仍然是保持身体健康所必须的。
Rest is as essential to our physical health as the water we drink and the air we breathe.
休息对于健康身体的重要性就相当于我们喝的水和我们呼吸的空气。
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。
Getting the focus right is essential when trying to photograph water.
拍摄水时，找准焦点非常必要。
True friendship is like water, which is tasteless but is essential to our body.
真正的友谊，就像是水，这是无味的，但至关重要的是我们的身体。
Each and every cell needs water to perform its essential functions.
每个细胞都需要水来执行他们的基本功能。
Air, food and water are things essential for life.
空气，食物和水是生命不可缺少的东西。
Light, water, air and soil are essential to plant life.
阳光、水、空气和土壤对植物生存是不可缺少的。
Water is essential to the growth of crops.
水对庄稼生长是必要的。
Water is one of the essential resources in our life.
水是我们生活中最重要的资源之一。
Therefore, it's essential to drink enough water anytime you go for a hike.
因此，出行中需要的时候保证饮用足够的水是最基本的事项。
Many scientists think that liquid water is essential for life!
许多科学家认为液态水是生命存在必不可少的条件！
In the process of diluting, water plays an essential role.
在稀释过程中，水起到了至关重要的作用。
水是生命核心的因素。
Water is the essential substance of our daily life.
水是人们日常生活中不可缺少的物质之一。
Water plays an essential part in our life.
水对于我们来说不可缺少。
Maintaining water quality is also essential to maintaining a scale-free system.
维持水质量也是必要的到维持一个无刻度系统。
Human experience instructs that liquid water, preferably lot of it. is essential for life.
人类的经验指出，液态水是生命的基本，而且水越多越好。
Water is essential to human survival and living as natural resources.
水资源是人类生存和生活必不可少的自然资源。
Water resource is a major natural resource and also an essential clement of environment.
水资源是一个较大的自然资源，并也是环境中必不可少的组成部分。
Hot tubs: Add 10 drops of essential oil to water.
热水澡：在水中滴入10滴精油。
Hot tubs: Add 10 drops of essential oil to water.
热水澡：在水中滴入10滴精油。
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