To live, you have to exist at first.
要生活，你首先必须存在。
要生活，你首先必须存在。
要生活，你首先必须存在。
要生活，你首先必须存在。
Life teaches us to live. To live, you have to exist.
生活教会我们去生存，想生存，先得存在。
Many of us face the question: why do negative emotions have to exist at all?
很多人会有这样的疑问：为什么负面情绪会存在？
All security considerations have to exist on the spectrum between convenience and protection.
所有安全性考虑必须兼顾方便和保护。
For example, utility methods on the implementation class don't have to exist on the remote interface.
例如，实现类的实用程序方法不必放在远程接口上。
A file system path. The file does not have to exist on disk. If it does not exist, it is created for you.
一个系统文件路径，这个文件路径不一定需要存在，如果不存在，它会自动为你创建。
Specifically, engineering roles that enable developers to do testing efficiently and effectively have to exist.
也就是说，有必要存在一种让开发工程师更快更有效的做测试的工程作用。
These applications do not all have to exist, but for the ones that do, you need to define all the required elements for integration.
这些应用程序不需要全部存在，但对于存在的应用程序，您需要定义集成所需的全部元素。
The services-config.xml configuration file references the other configuration files (which have to exist), configures BlazeDS logging, and sets up any channels.
services-config.xml配置文件引用其他配置文件（如果存在）、配置 BlazeDS日志记录并建立任何通道。
The idea came to us that influential characters didnt have to exist, that fictional characters were just as important in our lives, even in maybe some cases more so than real people, Lazar said.
拉撒尔说：“有影响力的人物不一定真实存在，虚构出来的人物在我们的生活中同样重要，有时他们甚至比现实人物的影响力还要大。”
Though one should have dreams, it's not realistic to exist on dreams.
尽管人应该有梦想，但是依靠梦想生活也不现实。
The modern atmosphere supports many forms of complex life that would not have been able to exist in Earth's first atmosphere because the oxygen level was too low.
现代大气层支持着许多复杂的生命形式，而这些生命在地球最初的大气层中是不可能存在的，因为当时的氧气含量太低。
It would have been warm enough on these planets for liquid water to exist.
这些行星上的温度足够高，足以让液态水存在。
If society is to exist as a unity, its members must have shared values.
社会若要成为一个统一的群体，它的成员就必须有共同的价值观。
Thanks to Joe, I have realized how little basis there is, for the social divisions that exist in every community.
多亏了乔，我意识到每个社区中存在的社会分裂的基础是多么的薄弱。
"We will do the right thing and do what we have to do to investigate crimes wherever they exist," claimed the police officer in chief.
这位警官称：“我们要做正确的事，做我们必须做的事来调查犯罪，无论这些犯罪发生在哪里。”
What has happened is that many investment Banks, such as Bear Stearns and Lehman Brothers, have ceased to exist.
已经出现的问题就是，许多投资银行例如贝尔斯登和雷曼兄弟已经不存在了。
"Today, investment Banks, the pride of Wall Street, have virtually ceased to exist," he said.
“今天，投资银行，华尔街昔日的骄傲，已不复存在了。”他说。
From our mobile development perspective, the WSDL document you want to consume will typically already exist, so all you have to do is generate the JSR 172 WSA stubs.
从我们移动开发的角度来看，需要消费的WSDL文档通常已经存在，您需要做的仅仅是生成jsr 172wsa存根。
Even in Venus' wetter days, the planet's heat would have made it difficult for water to exist in liquid form.
即便在金星上有水的时期，其高热也会让水无法以液态水形式存在。
and, ambiguously, with children. He once said that if there were no children in the world, he would have no reason to exist.
易产生歧义的，和孩子们。他曾经说过，如果世界上没有孩子，那就没有他存在的意义。
We know that rational knowledge exists before experience, so if to exist is to experience we must always have both sources of knowledge.
我们知道理论知识是先于实践而存在的，所以如果存在就是能感知，我们必须既有理论，又有实践。
Although software has become ubiquitous and critical for our daily existence, the fundamental laws of software development, if they exist, have yet to be discovered.
虽然软件对于我们的日常生活已经变得普遍存在并具有决定性，但是软件开发的基本准则，如果存在的话，还没有被发现。
But theological differences certainly exist, and have to be managed.
但理念上的差异的确存在，并需要得到管控。
"The rivers and the forests have a moral right to continue to exist as they have for thousands of years," he said.
他说，这里的河流和森林有权利按照自己生存了数千年的方式继续生存下去。
We have to work through channels that already exist.
我们必须通过现有渠道开展工作。
We have to work through channels that already exist.
我们必须通过现有渠道开展工作。
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