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。
Steve Sinclair, head of the company, said, "We have to build something that helps you when you need it and stays off when you don't need it."
公司负责人史蒂夫·辛克莱说：“我们必须制造一些东西，在你需要它的时候提供帮助，不需要它的时候则关闭。”
It's going to be the best camera, because it's there when you need it.
它将成为最出色的照相机，因为你需要时它总是在手边。
It makes me feel secure and hopeful to know that help is there when you need it.
在需要的时侯就会有人帮助，这让我有了安全感，有了希望。
What do you drop when you need it and take it back when you don't need it?
什么东西你需要时就把它扔掉，不需要时就把它收回来？
Ask for help when you need it; seek the wisdom the world holds and hold on to it.
请求他人的帮助，当你确实需要的时候；在大千世界中寻找正确的判断然后坚持下去。
Adjust the central heating controls so that the boiler is only on when you need it.
调整集中供暖控制，以便锅炉只在需要时启用。
This article doesn't get into all of that, but it's fairly easy to add when you need it.
本文不会深入讨论这一点，不过需要时可以很容易地添加安全检查。
You want a supplier who can provide what you need at a high quality, when you need it.
当你需要产品的时候，你需要一个能为你提供高质量产品的供应者。
You just ran out of shoe shine just when you need it for a job interview. Not to worry.
要去参加一次工作面试，鞋油用光了，不用担心。
You have the right to get outside help in taking care of the patient when you need it.
必要的时候，你有权从外界获得帮助来照顾患者。
It's OK to ask for help when you need it; don't be afraid of going to someone for help.
需要帮助的时候，寻求帮助是可以的：不要害怕向某人寻求帮助。
If you take insulin when you need it, you can help prevent complications, not cause them.
如果在需要的时候你开始使用胰岛素，能够帮助你预防并发症，而非导致并发症。
The important part is capturing the information now, so that you have it when you need it.
重要的是现在就掌握这些信息，这样当你需要它时，你就用的上了。
It's being able to access what you need, when you need it, without breaking the flow of your work to find it.
当你需要的时候能够很容易的找到，不需要打断你的工作流程专门停下来找这件东西。
I only hope that you have enough love and friends that you will have a shoulder to cry on when you need it.
我只是希望你有足够的爱心和朋友，这样在你需要的时候，你总可以找到一个倚靠着哭泣的肩膀。
I only hope that you have enough love and friends that you will have a shoulder to cry on when you need it.
我只是希望当你需要时，会有足够的爱人和朋友，给你一个可倚靠哭泣的肩膀。
Tip: Save the text message sender as a contact in your mobile phone, so you'll have it handy when you need it.
贴士：保存文本信息发送者作为您手机的联系人以便不时之需。
That's the key though, you have to be willing to help someone and not too proud to ask them for help when you need it.
关键是，你是乐意帮助别人，而在需要帮助的时候，放下骄傲请求别人的善意。
The more that your inspiration becomes a part of your life, the less likely it is to run out when you need it most.
灵感在你的生活中占得越多，在你最需要它的时候，它就越不可能消失。
"If you go through your life helping other people, then when you need it, they'll be there for you," says Brian M.
44岁的布莱恩•m•王说道：“如果你在生活中帮助其他人，当你有需要的时候，他们也会愿意帮助你。”
But the underlying theme of this installment is control: when you want it, when you need it, and when you should let it go.
但本期的内在主题是控制：什么时候想要控制、什么时候需要控制、什么时候应该放弃控制。
Using a car-sharing service only when you need it can save hundreds, possibly thousands, over the full-on cost of car ownership.
有需要的时候租辆车来用，可能会比拥有整辆车省下数百甚至数千的费用。
If you carefully consider what you're doing, get help when you need it, and never stop asking questions, you can mitigate your risk.
如果你很谨慎的考虑过你在做的事情，那么在你需要帮助的时候寻求帮助，并且不要停止质疑，这样你可以减少你的风险。
Temps account for just over 10 per cent of his factory’s 400-strong staff and provide a “short-term shot in the arm when you need it”.
在他厂里的400名员工中，临时工的比例刚刚超过10%，他们“在你需要的时候”为你注入“一剂强心针”。
Jupiter, now in your seventh house of marriage and serious collaborations, will provide you with help just when you need it most.
木星现在在你关于婚姻和重大合作关系的第七宫，将在你最需要的时候给你帮助。
Like I showed you in Part 1, you can simply store the key of a related object in another and then retrieve that object when you need it.
正如我在第1部分中介绍的，您在一个对象中存储另一个相关对象的键，然后在您需要时查询这个对象。
But when you need it, it is much more robust to have well-tested built-in functions than to write your own ad-hoc converters and formatters.
但是当您需要这个功能时，使用充分测试过的内置函数要比编写您自己的特制的转换器和格式化工具要稳妥得多。
They praise you when you need it. They encourage you when you're down. They try hard to improve themselves and expect you to do the same.
他们会在你需要时称赞你。他们在你沮丧时鼓励你。他们努力使自己更好，对你也有相同的期待。
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