Why dose a whole field with chemicals if you can spray only where they are needed?
如果你可以只在需要的地方喷洒化学药品，为什么要在整个田地里喷洒呢？
As if you needed another reason to hate the gym, it now turns out that exercise can exhaust not only your muscles, but also your eyes.
若你需要另一个讨厌健身房的理由，最近事实证明，运动不仅会使肌肉疲劳，还会让眼睛疲劳。
Maybe they made you feel better, but you had no choice in the matter, if you needed money on the scale only VCs could supply.
也许他们让你感觉更好些，但是如果你需要只有风投们可以提供的资金规模，那么你在这件事情上没有选择。
But we strongly recommend you start with the smallest number of metrics you can, then add additional metrics only as needed.
但我们强烈推荐您从最少数量的度量标准开始，然后只在需要时添加额外的度量标准。
Your JSP source would be much shorter and clearer, and if you ever needed to change the address block, you would only need to do it in one place.
您的JSP源代码应给更精悍更清晰，如果您曾需要变更这个地址组，您就只需要在一个位置进行变更。
Your JSP source would be much shorter and clearer, and if you ever needed to change the address block, you would only need to do it in one place.
您的JS p源代码应给更精悍更清晰，如果您曾需要变更这个地址组，您就只需要在一个位置进行变更。
A live connection is required only when code updates or builds are needed, or when you need to view remote resources for a project.
只是在您需要更新代码或者构建时，或者需要查看远程的项目资源时，您才需要进行实时的连接。
If you turn it off, only the ICONS for the modeling constructs are shown, which greatly reduces the space needed.
如果您将其关闭，则仅显示建模构造的图标，从而极大地减少所需的空间。
By collecting only the needed statistics, you can avoid collecting irrelevant statistics that drive up CPU overhead and create unnecessary workload inside limited maintenance Windows.
通过只收集需要的数据，您可以避免收集无关统计数据，而这些数据会在有限的维护窗口中提高CPU占用，增加不必要的负荷。
The advantage to LKMs is that you can minimize the memory footprint for a kernel, loading only those elements that are needed (which can be an important feature in embedded systems).
LKM的优点是可以最小化内核的内存占用，只加载需要的元素（这是嵌入式系统的重要特性）。
To prove that the new method actually does as stated, you will construct a simple application that only highlights the components needed for this function.
为了证明新方法确实如前面所说的那样，您将构建一个样例应用程序，突出该功能所需的组件。
You should strike a balance between exposing every possible field (computed or otherwise) and only the minimum needed.
应当在公开每个可能的字段(计算或相反)与只公开所需的最少字段之间进行权衡。
You need to drill down from the root model and open only those fragments that are needed.
您需要回到根模型中，并只须打开那些需要的片段。
If you save only the CARDS and not the envelopes, you reduce the storage space needed by half.
如果你只收藏卡而不要信封，你就节约了一半空间。
Your turnaround response would be, 'Can you tell me what is so exceptional about the job that only the rarest of skills are needed?'
你可以这样反问他们您能告诉为什么这份工作只需要非常罕见的技术要求，它的特别之处在哪呢？
You only need to apply the default configuration; no extra resources or environment variables are needed. Follow these basic steps to install the toolkit.
您只需要应用默认的配置；不需要额外的资源或环境变量。
In some cases, reconciliation may not be needed (when the models are already consistent, or if you only want to check the consistency of models without changing them).
在某些情况下可能不需要调和(比如模型已经是一致的了，或者你只想检查模型的一致性而不想改变它们)。
If you are only planning to mimic the environment, not copy the data over, then make the file sizes smaller, and use fewer containers if needed.
如果您仅仅计划模拟环境，而不要复制整个数据，那么就减小文件的大小，并在必要时使用较少容器。
For example, if you only needed to audit database connection and system administration event types, you would only specify the VALIDATE and SYSADMIN event types when configuring the facility.
例如，如果只需要审计数据库连接和系统管理事件类型，那么在配置审计功能时应该仅指定VALIDATE和SYSADMIN事件类型。
For instance, you may manually send an update of some sort via secure transfer only on an as-needed basis.
例如，可能只在需要时手工地通过安全的传输通道发送某些东西的更新。
Because you don't actually add content, the authoring template is needed only so that you can create a content object.
因为您不会实际添加内容，所以只需要编写模板就可以创建一个内容对象。
Life will show exactly which things you actually need, and which things you only thought you needed.
生活就会展现出什么东西是你真正需要的，以及哪些是你想着需要的。
Practice removing extraneous ideas and words until you have only what's needed to express a simple thought.
即尝试去除那些多余的思绪和文字，直至仅剩表达一个简单的想法所必须的简单东西。
You cannot only manage group level properties and information as needed, but you can also maintain access permissions for your groups.
不仅能够根据需要管理组级别的属性和信息，还能够维护组的访问权限。
I returned to London days earlier than I needed to and have only visited you once in the years since then.
我提早几天会伦敦了而且只在随后的几年里只拜访过你一次。
This step is needed only if you want to select a specific DOM to be used by JAXP; otherwise, it USES a default implementation.
仅当想选择一个要由JAXP使用的特定DOM时，才需要这一步；否则，它使用缺省实现。
Let's assume that the four opportunities above were the only ones you needed for your business case.
让我们假设你的商业用例只需要上面提到过的四个机会。
Fifteen years ago if you wanted to write an application that would run on over 90% of the world's personal computers, you only needed to target one OS.
十五年前你想写个在全世界90%个人电脑上应用的程序，只需你针对一种系统开发。
Try to nap only if you feel exceptionally tired during the day. Doing so will keep you from developing a reliance on naps while still allowing you to get your needed rest.
白天很累时要尝试午睡，这样做将抑制对午睡的依赖，同时使你得到需要的休息。
Try to nap only if you feel exceptionally tired during the day. Doing so will keep you from developing a reliance on naps while still allowing you to get your needed rest.
白天很累时要尝试午睡，这样做将抑制对午睡的依赖，同时使你得到需要的休息。
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