Note the caching is not really required for the particular traversal algorithm you are using, but I leave it in to show how to do this if it is needed as you expand this tool in the future.
注意，这个缓存对于您使用的特定遍历算法并不真正需要，我在这里使用它只是为了展示当您将来需要扩展这个工具时应该怎样做。
It never earned me a living. For that I had to do other things-when I really needed money, for my wife and kids.
可是买来的学位从来不能帮我养家糊口，我需要钱来养老婆孩子，不得不做些别的营生。
It also helped convince me that there were some really good practices that I needed to learn.
这本书帮助我确定了有一些很好的实践我应该去学习。
When I was really in the midst of my busyness epidemic, I was telling myself that I needed to work so many hours each week because 'someone had to do it'.
当我真的置身于这场忙碌瘟疫中的时候，我就不断地告诉自己：每周需要花这么多时间在这项工作上是由于这项工作必须得有人做。
And how do I ensure that the services that are implemented in IT are really the ones that are needed from a business perspective?
以及我如何确保在IT中实现的服务真的是业务方面所需的服务？
We have won the Nobel Prize, and I think it is a shot in the arm that is really deserved and needed.
我们获得了诺贝尔奖，我想这是我们应得的一种激励。
After watching this movie I really needed time to figure out what to think of it.
看完这部电影，我真的需要时间来想明白该怎么评价它。
Perseverance is definitely important, but I don't think that there was ever a time where there was something that was so difficult that I really needed to persevere over and over again to overcome it.
毅力是绝对重要的，但我不认为曾经有过一段时间，有东西太难了，我真的需要坚持一遍又一遍地去克服它。
After watching this movie I really needed time to figure out what to think of it.
看完这部电影，我真的需要时间来找出想起来了。
Really, I could stand to spend a bit less time looking for my phone—just like everybody else—but nonetheless, a phone drained of battery life wouldn't be able to make a call if you ever needed it to.
说实话，像其他人一样，我也还能忍受费神地到处找手机，但如果找到手机后发现电池完全不够用来打个电话，我可要崩溃了。
I didn't really start to think about it until I scored my 82nd, 83rd, 84th goals and then realised I only needed 16 more to achieve that.
我一直都没有想过打进百球，直到我打进了82、83、84个进球时，我随后意识到我只需要再进16个进球就可以实现这一目标。
It was about twelve, and I really needed my sleep, so I decided to try today.
当时时间已经快十二点了，我已经很想睡了，所以我决定今天再试试看。
It acted as a means of seeing who this funny, oddball philosopher really was, and who I needed to become.
它成为一种途径，通过它能发现这个可笑而古怪的哲学家的真正面目，以及我将要成为的那种人。
In retrospect I am so grateful for the support and care that the medical staff provided whenever my brother really needed it.
现在回顾起来，我是非常感谢那些医务人员在弟弟需要的任何时候所给予他的鼓励与关爱。
I think it depends whether a tutor is needed. You can have a try if you really have some trouble in learning.
作者介绍自己理想的大学是什么样子的，并要为它而努力。
I thought it would take me 10 years. "I didn't really start to think about it until I scored my 82nd, 83rd, 84th goals and then realised I only needed 16 more to achieve that."
我一直都没有想过打进百球，直到我打进了82、83、84个进球时，我随后意识到我只需要再进16个进球就可以实现这一目标。
I thought it would take me 10 years. "I didn't really start to think about it until I scored my 82nd, 83rd, 84th goals and then realised I only needed 16 more to achieve that."
我一直都没有想过打进百球，直到我打进了82、83、84个进球时，我随后意识到我只需要再进16个进球就可以实现这一目标。
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