There are environmental benefits, too: renting a car when you need it, rather than owning one, means fewer cars are required and fewer resources must be devoted to making them.
还有环境方面的好处：在需要的时候租一辆车，而不是购买一辆，意味着汽车的需求量更少，用于制造汽车的资源也更少。
And there are environmental benefits, too: renting a car when you need it, rather than owning one, means fewer cars are required and fewer resources must be devoted to making them.
还有环境方面的好处：在需要的时候租一辆车，而不是购买一辆，意味着汽车的需求量更少，用于制造汽车的资源也更少。
It is required for the run data. You have no choice.
运行数据需要这些数据，没有选择的余地。
These systems are pooled together to provide you with the required IT services.
这些系统组合在一起向用户提供所需的IT服务。
However, when you analyze it you realize that synchronization is required only for the first invocation of the method.
然而，当分析这段代码时，您会意识到只有在第一次调用方法时才需要同步。
The e-form guides you along as you complete it by giving you feedback on formats, required fields, and so on.
电子表单通过给您有关格式、所需的域等方面的反馈信息，指导您完成它的发布。
Each cheat sheet is designed to help you complete a task, and it lists the steps required.
每个步骤说明书用于帮助您完成一项任务，并且它列出了所需的步骤。
When you open the website, it automatically detects all the settings and prompts you to install all the required updates.
当你打开网页，它会自动检测所有的设置，并提示你安装所有需要的更新。
If the array is not yet required, then you must release it, as shown in Listing 12.
如果不需要数组，那么您必须释放它，如清单12所示。
EAGAIN -- The required resource is temporarily unavailable; if you try the operation again later, it might succeed.
EAGAIN：所要求的资源暂时不可用；如果稍后再尝试此操作，则可能会成功。
In is not required, but it does give you a more friendly workspace.
此插件不是必需的，不过它的确使得工作区更为友好。
First, you learned how to install the DB2 database engine before examining what it was you wanted to store and the database structure that would be required to store it.
首先，您了解了如何安装DB 2数据库引擎，然后研究需要向数据库中存储哪些信息，以及存储这些信息需要什么样的数据库结构。
However, if you were required to install requisite software, you need to review the output when it was installed to see if a reboot is required.
但是，如果系统需要您安装必需的软件，则您需要在安装了软件后查看输出，以确定是否需要重新启动。
You have now completed the configuration steps required for this sample and you are ready to test it.
现在您就完成了这个样例需要的配置步骤，可以测试它了。
If you don't relish the detailed work that is required, you may find it much more difficult to be successful.
如果你不喜欢做这些必需的细致工作，那么你会发现想要获得成功就太难了。
This step is required because when you use redefine, it allows you to only redefine schema elements from a schema with the same namespace as the parent (redefining) schema.
这一步是必需的，因为使用重定义时只能重定义与父模式(重定义模式)名称空间相同的模式中的元素。
Optionally, you can enter a passphrase for increased security, but it isn't required.
可以输入一个密码以提高安全性，但这不是必需的。
Are you willing to sell it door to door if required?
如果需要，你愿意上门推销吗？
And all you need to work with it is an HTTP connection; no JDBC driver is required, nor do you need a third-party administrative-management platform.
您只需要操作它的HTTP连接即可；既不需要JDBC驱动程序，也不需要第三方控制管理平台。
Note: You are not required to learn the IT software, however, to do this.
备注：以上操作并不需要您学习IT软件。
The office processing your application will contact you if it needs more documentation or if you are required to attend an interview.
如果需要其他文件，或是需要进行面试，签证处会联系申请人。
The eventsQueue attribute is not required, but I recommend you treat it as such.
eventsQueue属性不是必需的，但是我建议您也同样对待。
That way, you get all of the required dependencies bundled with it including the Prototype, Script.aculo.us, and overlibmws libraries.
这样一来，您就可以获得随之捆绑的所有所需的依赖项，包括Prototype、Script .aculo . us和overlibmws库。
In this section, you will configure the required resources for the application client project so that it can contain the server resources.
在这个部分中，您将为这个应用客户端项目配置必要的资源，这样它才能包含这个服务器资源。
It will also help you determine what level of regression testing may be required.
它还将帮助您确定需要什么级别的回归测试。
While you are not required to list your goals to start out GTD, it is encouraged once you get past the "runway" level and start looking at more elevated levels of life.
虽然您不需要在GTD的开始阶段就列出目标，但当你驶上正轨，并开始寻找更多的高层次的生活，这种方法是很值得推荐的。
No modifications are required for this sample program; you can compile and run it using the commands shown in this section.
该示例程序不需要修改；可以利用本部分中所示的命令编译并运行它。
You choose the best Workspace and develop it further as required.
您选择最佳的工作区，并进一步根据需要进行开发。
This article took you through the steps required to implement an it solution that is closely aligned with the business, using the principles of service orientation and SOA.
本文指导您完成所需的相关步骤，以使用面向服务的原则和SOA来实现与业务紧密一致的IT解决方案。
Your E-mail address is required, but you can elect to hide it so that it's not visible from your public profile.
您的电子邮件地址是必填内容，但是可以选择将它隐藏起来，这样就不会显示在您的公共概要信息中。
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