Perhaps struggle unfolds first, not at an economic or social level, but over the appropriation of air, essential to life itself.
也许首先展开的不是在经济或社会层面上的斗争，而是为占有对生命本身必不可少的空气而斗争。
This capacity for increased expressiveness, in fact, was essential to the Romantic style that dominated 19th century music.
事实上，这种更高级别的表现力对于主导19世纪音乐的浪漫主义风格来说是必不可少的。
Creating this sanctuary is a bold move that the people of Palau recognise as essential to our survival.
建立这个保护区是一个大胆的举措，帕劳人民认为这对我们的生存来说至关重要。
Since most planetary scientists believe that water is essential to life, the presence of jarosite means that one prerequisite for life was once present on Mars.
由于大多数行星科学家认为水是生命的基本要素，因此黄钾铁矾的存在意味着火星上曾经存在出现生命的先决条件之一。
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。
Instead, it asks doctors to advise parents before their babies turn two that play is essential to healthy development.
相反，这要求医生建议父母，在孩子两岁以前，玩耍对其健康发展至关重要。
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。
Creating this sanctuary is a bold move that the people of Palau recognize as essential to our survival.
建立这个避难所是一个大胆的行动，而帕劳人民认为，这是我们生存的必要条件。
It is essential to build up the military option and show that this is not a bluff.
重要的是准备军事解决途径来证明这并不是虚张声势。
It was absolutely essential to separate crops from the areas that animals used as pasture.
把庄稼与牲畜的放牧区分开至关重要。
For pictures of people behaving naturally, not posing for the camera, it is essential to shoot unnoticed.
要拍摄人物表现自然、不对镜头摆姿式的照片，抓拍很关键。
Students' inner motivation is essential to their developments.
学生的内在动力对他们的发展至关重要。
Generally, students' inner motivation together with high expectations from others is essential to their development.
一般来说，学生们的内在动力以及来自于他人的高期望对学生的发展至关重要。
Hypnosis, yoga, Silva mind-control, religious ceremonies and faith healing are all associated with successful suggestion, but none of their techniques seem to be essential to it.
催眠、瑜伽、席尔瓦精神控制、宗教仪式和信仰治疗都与成功的建议有关，但它们的技巧似乎都不是必要的。
Physical activity can improve blood flow to the brain, fueling memory, attention and creativity, which are essential to learning.
体育活动可以促进血液流向大脑，提高学习必需的记忆力、注意力和创造力。
They do not see it as "real teaching", especially as it does not seem to involve the "work" they have learned to believe is essential to learning.
他们不认为这是“真正的教学”，尤其是因为它似乎不涉及他们认为对学习至关重要的“工作”。
Idiochromatic elements are essential to a mineral's composition.
原色元素是构成矿物的基本元素。
In analysing a situation, it's essential to distinguish the main aspect from the minor ones.
分析形势，要看清主流和支流。
For these reasons, it is essential to define the interfaces that the stubs and skeletons use.
出于这些原因，定义存根和骨架使用的接口是最基本的要求。
Both these functions are essential to complete the full cycle of a database query.
这两个函数对于完成数据库查询的整个处理过程是非常重要的。
The messages contain a large number of abbreviations that are essential to understanding its contents.
包含着数量巨大缩写的信息是理解它的内容的关键所在。
The company must view your talents and contributions as essential to the company's future success.
你必须让公司觉得对于公司将来的成功来说，你的才能和贡献是必不可少的。
Opposition is essential to a true equilibrium of forces.
凡事都有正有反，正与反乃是平衡力量的要素。
The consumer society does not encourage introspection, which is essential to self-knowledge.
消费型社会并不鼓励自我反省，而这对自我认识来说是至关重要的。
Industry tooling is essential to enabling the efficient reuse of existing application functions.
行业工具对于有效地重用现有的应用程序功能是至关重要的。
When problems crop up in business, a sincere apology is essential to restoring that trust.
商界一旦出现问题，真诚地道歉是恢复上述信任的关键。
In such cases, it is essential to have strong debugging tools.
在这种情况下，使用强大的调试工具是必不可少的。
When considering an SOA, it's essential to factor in data integration.
当考虑SOA的时候，必须将数据集成作为一项基本要素。
Separating some auxiliary storage pools (ASPs) for journal files was essential to our test.
在日志文件中分隔辅助存储池（ASP）在我们的测试中是必要的。
Separating some auxiliary storage pools (ASPs) for journal files was essential to our test.
在日志文件中分隔辅助存储池（ASP）在我们的测试中是必要的。
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