The former is principal and basic but not on ly, the latter is the second but indispensable.
前者是主要的或基本的，但不是唯一的，后者是第二位的，却是不可或缺的。
In the modern tourism industry, each kind of advertisement is not dispensable, but indispensable, and the promotion function of the tourism advertisements will be more and more obvious.
在现代旅游业中，各种广告已经不是可有可无，而是非有不可，旅游广告的促销作用将得到越来越大的显现。
But policies to help workers adapt will be indispensable.
但帮助工人去适应的政策将是必不可少的。
Psychotherapy. Often essential, it obviously requires time and money. But, to find the causes of stress and the best solutions is often indispensable and highly effective.
精神疗法。十分常见，这需要时间和金钱，去寻找压力源和最佳的解决办法通常是不可或缺的并且十分有效。
The app has been indispensable to our son Khalil’s sleep; with the sound on, he sleeps fitfully, but without it we have the sort of disaster that would make Jerry Bruckheimer proud.
该应用程序是我们的儿子哈利勒睡觉必不可少的工具； 伴随着那些声音，他睡的很舒服，但是没有它，我们就会遇到一些使杰里布鲁克海默自豪的麻烦。
Often essential, it obviously requires time and money. But, to find the causes of stress and the best solutions is often indispensable and highly effective.
十分常见，这需要时间和金钱，去寻找压力源和最佳的解决办法通常是不可或缺的并且十分有效。
Most of these features are designed for some "jazzy" functionality, but often at the expense of other indispensable elements.
那些特性中的大部分设计用于一些“花哨”的功能，但通常以其他不可缺少的元素为代价。
It's a torrent of information to keep track of, but if you are worried about your company's online reputation or want the latest news on Iran, it's indispensable.
想要跟上这股信息急流可不太容易，但是如果你很在意你的公司在网上的信誉或者想要知道关于伊朗的最新新闻，它是不可或缺选择。
We all like to feel indispensable at work, but the problem with being the go-to person is that you can never take a work vacation.
我们都喜欢成为工作中不可或缺的重要人士，但是成为这样的人才之后你就永远不能休假了。
Our indispensable water resources have proven themselves to be greatly resilient, but they are increasingly vulnerable and threatened.
我们不可缺少的水资源确实具有巨大的复原力，但它们越来越脆弱也日趋受到威胁。
Both stars were paid relatively little for their initial work on the films but they have become indispensable to the Twilight franchise.
这两位明星最初在拍摄电影时所获的报酬相较而言少得可怜，不过他们对于暮光系列电影已变得不可或缺。
But - as I described in my book, the Long and the Short of It - having a realistic target rate of return in your mind is an indispensable tool for the sophisticated investor.
但正如我在拙著《theLongand theShortofIt》中所述，对于老练的投资者而言，心里有一个现实的目标回报率是一个不可或缺的工具。
GeoNames is one of those sites and services that is not just indispensable in its own right, but is also an important ingredient in other indispensable services.
GeoNames就是这样一个站点和服务，它本身就是一个不可或缺的资源，而且还是其他必需服务的重要组成部分。
We cannot live with their current practices, but nor can we live without them; their function - assessing the risk of securities - is indispensable.
我们无法容忍他们现在的做法，但我们也不能缺少他们，因为评级机构评估证券风险的职能不可或缺。
But instead of sitting smugly at your desk, you should be thinking about what you can do (right now!) to make yourself absolutely indispensable.
与其坐在办公桌前，沾沾自喜，还不如现在思考自己能做什么，从而保证自己的不可复制性。
But armed with the general's brilliant combination of cunning and self-belief, France made itself indispensable to the construction of Europe.
但是，具备了将狡猾和自信相结合的将军智慧后，法国使自己成为了建设欧洲中不可缺少的一份子。
You'll not only hone valuable leadership skills and discover untapped talents, but you'll also build a reputation as an indispensable employee.
你不仅可以学会有价值的领导技能，发掘自己以前没察觉到的才能，还可以赢得成为不可缺少的雇员的好名声。
Since then, it has become an expedient but far from indispensable tactic.
不过开始之后，非暴力不再是必要策略，而是变成了权宜之计。
Most of the luxuries, and many of the so-called comforts of life, are not only not indispensable, but positive hindrances to the elevation of mankind.
大多数的奢侈品，还有许多所谓的生活舒适品，非但没有必要，而且对人类进步大有妨碍。
The fox's magic, however, ran against the natural cosmic order, which gave supremacy to the Yang force and appropriated the Yin as an indispensable but inferior opposite. '8.
但是，狐狸的魔法违背者自然的宇宙秩序。这一秩序给予了阳的力量至高无上的地位，并且侵占了阴这种必不可少但低下的对立力量。
For many people, it became an indispensable tool for certain moments of professional panic, but not something you used daily or even monthly.
对很多用户来说，LinkedIn的确已经成为职业生涯道路上必不可少的工具，但不会每天或每月都使用该网站。
Some subjects may be better taught by using computers, but to explain important concepts a human teacher is still indispensable.
在上一些课程的时候，用电脑教可能会更好，但是如果解释重要概念，老师仍然必不可少。
I'm not going to predict that these IDE Plugins will someday be as popular as our web interface, but I think they'll remain an indispensable part of the issue tracking toolbox.
至于IDE插件是否会在将来像我们的Web界面那样受到大家的欢迎，我不感确定，但是我相信它们会作为缺陷追踪工具的分支，一直存在的。
More personnel changes maybe coming for the Pistons, but no matter what, Billups will still be the most indispensable point guard in the Eastern Conference.
活塞或许将面临更多的人员变动，但无论如何，比卢普斯仍将是东部最不可或缺的控球后卫。
The writing system is not only the most important auxiliary instrument of a language, but the indispensable system of signs used in daily life.
文字是语言最重要的辅助工具，是人们日常生活中须臾不可或缺的符号系统。
It is not the elongation of audit in enterprise, but is an indispensable administration means, making the actions of guarantee and promoting to the management and administration of enterprise.
它不是国家审计在企业的延伸，而是企业不可或缺的管理手段，对企业经营和管理起着保障和促进作用。
If he can do so, he will find a job no longer a burden but an indispensable part of his life.
如果能做到这一点，他就会发现，工作不在是一种负担，而是他生活中不可或缺的一个重要组成部分。
But retail banking is surely more indispensable.
但零售银行业无疑是更加不可或缺的。
Bag printing market is small, but it is indispensable in people's social life, with the rise of Chinese retail business, bag printing business volume growth will be more fast.
手提袋印刷市场规模虽小，但它在人们的社会生活中不可或缺，随着中国商业零售业的崛起，手提袋印刷业务量的增长将会越来越快。
Bag printing market is small, but it is indispensable in people's social life, with the rise of Chinese retail business, bag printing business volume growth will be more fast.
手提袋印刷市场规模虽小，但它在人们的社会生活中不可或缺，随着中国商业零售业的崛起，手提袋印刷业务量的增长将会越来越快。
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