A ceasefire is an essential precondition for negotiation.
停火是谈判的必要前提。
A firewall provides an essential security blanket for your computer network.
防火墙为计算机网络提供了基本安全保障。
Most authorities agree that play is an essential part of a child's development.
大多数权威人士认为玩耍是孩子成长的一个重要部分。
We know fidelity is an essential principle of genetic transmission.
我们知道，准确性是基因传递中的一个必要原则。
Design courses, then, should be an essential element in engineering curricula.
因此，设计课程应该成为工程课程的一个基本元素。
Predators are an essential factor in maintaining communities that are rich and diverse in species.
捕食者是维持群落物种丰富多样的一个重要因素。
Determining where we are in relation to our surroundings remains an essential skill for our survival.
确定我们与周围环境的关系仍然是我们生存的基本技能。
Another opinion is that the paintings were directly related to hunting and were an essential part of a special preparation ceremony.
另一种观点认为，这些画与狩猎直接相关，是一项特殊的准备仪式的一个重要组成部分。
They can attend to several things at once in the mental scratch pad called working memory, an essential skill in this era of multitasking.
他们可以在大脑的“工作记忆”区同时处理几件事，这是这个多任务时代的一项基本技能。
Even in small companies, computers are an essential tool.
即使在小公司里，计算机也是必不可少的工具。
A degree is an essential prerequisite for employment at this level.
学位是做这级工作必备的先决条件。
Smart phones have become an essential part of our daily lives.
智能手机已经成为我们日常生活中必不可少的一部分。
Hard work is often an essential ingredient of luck.
努力通常是运气的重要组成部分。
Pursuing a career is an essential part of adolescent development.
追求事业是青少年发展的重要部分。
Emotions are an essential and inseparable part of our consciousness.
情感是我们意识中必不可少且不可分割的一部分。
They played an essential role in raising awareness and interest among the rural communities.
它们在提高农村社区的认识和兴趣方面发挥了重要作用。
Team games should be an essential ingredient of physical education in the national curriculum.
团队运动应该成为国家体育课程中的重要组成部分。
These circular buds have played an essential role in the Native American diet for a long time.
很长一段时间里，这些圆形的蓓蕾在美国本土的饮食上有着举足轻重的作用。
Psychiatrists in the Senegalese capital's main hospital see it as an essential part of the healing process.
塞内加尔首都主要医院的精神科医生将其视为治疗过程中必不可少的一部分。
Firstly, ambition plays an essential role because it serves as a driving force for people to achieve success.
首先，志向起着至关重要的作用，因为它是人们取得成功的动力源泉。
Hard work is often an essential ingredient of luck because it enables one to take advantage of a lucky encounter.
努力工作通常是运气的重要组成部分，因为它能让人具备利用幸运际遇的能力。
Access to education is an essential part of one's privilege regardless of one's gender, culture, and family background.
无论一个人的性别、文化和家庭背景如何，接受教育都是其特权不可缺少的一部分。
Families have come to rely on married women's earnings as an essential part of their income rather than as "pocket money".
家庭成员已经开始依赖已婚妇女的收入作为他们收入的重要部分，而不是作为“零用钱”。
I agree that providing more access to public parks and sports facilities is an essential element when designing a new town.
我同意提供更多的公园和体育设施是设计新城镇时必不可少的元素。
Cultivating drawing talent can become an essential tool to improve people's observational skills in fields where the visual is important.
在强调视觉重要性的领域，培养绘画才能可以成为提高人们观察能力的重要工具。
What's more, researchers are coming to recognize that dreaming is an essential part of understanding, organizing and retaining what we learn.
此外，研究人员逐渐认识到，梦对于我们理解、组织和记忆我们所学过的东西十分必要。
Crying as an expression of feeling is unique to humans and has played an essential role in human evolution and the development of human cultures.
哭泣作为一种情感的表达是人类独有的，这在人类进化和人类文化的发展中发挥了重要的作用。
But crying as an expression of feeling is unique to humans and has played an essential role in human evolution and the development of human cultures.
但哭泣作为一种情感的表达是人类独有的，这在人类进化和人类文化的发展中发挥了重要的作用。
Energy is an essential resource across the entire food production cycle, with estimates showing an average of 7-10 calories of input being required in the production of one calorie of food.
在整个食品生产周期中，能量是一种必不可少的资源，据估计，生产一卡路里的食品平均需要7-10卡路里的投入。
But there is an essential difference.
但有一个根本区别。
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