These beavers do know how to build dams, and do so if the need arises, as may occur if they are forced to relocate after felling and consuming all nearby trees.
这些海狸知道如何建造水坝，而且在有需要的时候就会这么做，比如当它们在砍伐和消耗了附近所有的树木后被迫迁移的时候。
Mr. Obama's supporters seem to believe that all they need to do is to huff and puff and the old order in Washington will come tumbling down.
奥巴马的支持者想当然的以为只要他们威胁恫吓一番，华盛顿的旧秩序就能土崩瓦解。
Developers need not do anything extraordinary to make a product usable for people with disabilities; all they have to do is develop the product to meet specified requirements.
开发人员不需要为使产品对残疾人可用而做任何额外的事情，他们要做的全部事情就是开发满足特定需求的产品。
They might articulate a need or a desire, but what we have to do is understand all the technology ingredients and how they're evolving.
他们可能会提出要求或是愿望，我们所要做的事情是搞懂，所有技术成分，以及它们如何演变。
This is what happens when there's too many dollars sloshing around the system; they all need a place to rest, and when they do, they create equity bubbles.
当太多美圆在体系里游荡就会造成这样的情况发生；它们都需要一休息的地方，当它们这样做了，它们就制造了资本泡沫。
They imagine that, if they don’t have one, all they need to do is introduce it; if they do, they have sorted out the problems of social protection.
他们设想如果没有这样一个项目，那么他们所要做的就是拥有一个；如果他们这样做了，意味着他们已经理清了有关社会保护的问题。
They work by sending out pulses of high-frequency sound and then interpreting the reflections as images.To do all this, though, you need a device called a transducer.
它们的工作原理是通过发出高频声波脉冲并将反馈的信息转变成图像，为了实现这一过程，你还需要一个叫做变频器的设备。
The Republicans now have all the material that they need to do what they do best.
共和党现在拥有了他们大展身手所需的一切材料。
Mobile email is not used as teenagers have no need; they do not need to be connected to their inbox all the time as they don't receive important emails.
对青少年们来说，手机邮件毫无用处，因为他们不需要这个。用不着时刻检查互联网上的收件箱，因为他们不会收到什么重要的邮件。
These classes decide when they need to fire events, and when they do, they call all the listeners that are registered.
这些类负责决定什么时候它们需要触发事件，什么时候确实触发事件，以及什么时候调用所有登记的侦听器。
Therefore, all applications on the same physical server do not need to use the same prerequisite software, nor do they need to be upgraded at the same time.
因此，相同服务器上的所有应用程序都不需要使用相同的先决软件，也不需要同时进行升级。
All they need to do, in most states, is to display posters demonstrating how to aid diners in case they are choking.
在大多数情况下他们需要做的是张贴如何急救窒息客人的说明。
All they care about is what the services do and which service Level Agreements (SLAs) they need to comply with.
他们所关心的就是，服务进行什么工作以及需要符合什么样的服务水平协议(Service Level Agreement,SLA)。
Most importantly, they can be created on-the-fly. All you need to do is "cc: Betty."
最重要的，可以 快速创建，用户要做的只是“cc:Betty”（抄送至Betty）。
This ownership can be symbolic (e.g., business CARDS for all employees, whether they need them to do their jobs or not).
这种权利是具有象征意义的(例如，所有人都有名片的话是否会对他们的工作有帮助呢？)
Developers do not need to have all the requirements available before they start work.
对开发者来说在他们开始工作之前他们并不需要所有的需求可用。
You don't need to do all of these, but give a few of them a try to see if they make your day better.
你不必要做到以下所有的事情。只须尝试其中的几件事，看看它们是否真的能改变你的生活。
Do they need to follow all the steps described above in detail to build applications that consume existing services or to design new services that make use of an existing SOA?
为了构建使用现有服务的应用程序，或设计使用现有SOA的新服务，他们是否需要遵循上面详细列出的所有步骤？
Children are altruistic by nature, "he writes, and though they are also naturally selfish, all parents need do is try to tip the balance toward social behavior."
“孩子本质上是无私的，”他写道，虽然他们也是天生自私的，家长需要做的只是努力打破两者之间的平衡，使之趋向于社会行为。
That begs the question: the top media companies all know they need to make changes — but how do they find the right change and execute well?
这就引出了一个问题：所有的顶级媒体公司都知道必须做出改变——但如何才能找到恰当的着力点，并完美地执行呢？
They all know how I get wrapped up in my internal dialogue - I always have my mind on the next thing I need to do, whether it be work or creative stuff I'm working on.
他们都知道我是怎么被自己的内在对话蒙蔽的——我总是想着自己要做的下一件事，不管是工作还是那些创意小发明。
Sometimes I cannot believe how many gifted spiritual healers, and teachers have such huge money issues when all they need to do really is to transform their thinking.
有时我无法相信，有多少才华横溢的精神鼓动家和老师有那么多金钱事物，但他们真正需要转变的是他们的思维。
They work by sending out pulses of high-frequency sound and then interpreting the reflections as images. To do all this, though, you need a device called a transducer.
它们的工作原理是通过发出高频声波脉冲并将反馈的信息转变成图像，为了实现这一过程，你还需要一个叫做变频器的设备。
In this way, the consumers and providers do not need to know about each other, they just need to all connect to the ESB.
通过这种方式，使用者和提供者不需要知道彼此，它们只需要都连接到ESB即可。
They all know how I get wrapped up in my internal dialogue – I always have my mind on the next thing I need to do, whether it be work or creative stuff I'm working on.
他们都知道我是怎么被自己的内在对话蒙蔽的——我总是想着自己要做的下一件事，不管是工作还是那些创意小发明。
They are typically run from one of the major scripts above, so all you need to do is edit the contents.
它们一般都是从属于一个或几个以上的脚本，所以说，你要作的就是修改以下的文件来达到你的需求。
Meanwhile the UI developers need a server that can be trusted to be stable at all times otherwise they will be unable to do their own work.
同时，UI开发人员需要一台可信的服务器，能够一直保持稳定，否则他们就无法完成自己的工作。
Health departments, social services departments and professional societies all need urgently to look at what they can do to bring about these changes.
卫生部门、社会福利部门和专业团体都必须迫切地审视他们能够实现什么改变。
Once received, all the users need to do is double-click on this attached link. Doing this will open up the application and they can proceed to use it.
一旦收到邮件，所有的用户只需要双击邮件附带的链接，就可以打开应用程序，而且可以在以后继续使用它。
Once received, all the users need to do is double-click on this attached link. Doing this will open up the application and they can proceed to use it.
一旦收到邮件，所有的用户只需要双击邮件附带的链接，就可以打开应用程序，而且可以在以后继续使用它。
应用推荐