Do you know for sure that there aren't any memory leaks in your running services?
你能肯定的知道正在运行的服务里面没有内存泄露吗？
If you know for sure that you don't know, then you can start educating yourself.
如果你确信你不知道，那么你就应该开始自我教育。
Once you've got a potential candidate, how will you know for sure they can do the job?
一旦你已经有了一个潜在的候选人，您将如何确切知道他可以做好工作呢？
Don't buy your textbooks until you know for sure the teacher is actually going to use them.
不要买教科书，除非你确信你的导师会用到它们。
If you fail this test then you know for sure that you are not gradient field so you might as well do that.
如果通不过检验，那么可以肯定，它不是梯度场，你可能也会那样做。
You might ask, "Joyce, how do you know for sure God was talking to you, that your mind was not just making it up?"
你可能会问：“乔伊丝，你怎么能肯定那是神在和你说话呢，那会不会是你自己的假想？”
Even if you know for sure that she doesn't mean "no", reread the paragraph above that ended with "welcome to hell".
即使你知道或者确定她只是嘴上说说不而已，那么你也不要鸡动，重新读读上面欢迎你到监狱的例子。
These are the beginnings, yes; but how do you know for sure when you don't know the end, and how do you know, or even surmise, the end?
这是开始，没错；但当你还没有看到结果如何的时候，你怎么能确切地知道，即使是猜测到，结果呢？
One really tough teacher can ruin your semester. 2. Don’t buy your textbooks until you know for sure the teacher is actually going to use them.
不要买教科书，除非你确信你的导师会用到它们。
Share how it has made a tremendous difference in your life and that you know for sure that when you die you are going to spend eternity in Heaven.
和人分享他在你的生命中产生了何等巨大的变化并且你要明确在你死后你在天堂里有永生。
I think the soft drink company learned a valuable lesson from its Bryant experience: don't kick a popular sports star when he's down unless you know for sure he is really out.
也许可口可乐饮料公司已经从科比身上吸取了宝贵的教训：人气体育明星就算摔倒了也不要立即抛弃他，除非你确信他真的出局了。
If you know you're going to be out late, make sure you've got enough money for a taxi to get home again or arrange to stay with friends for the night.
如果你知道你会很晚才回家，确保你有足够的钱打车回家或者和朋友一起过夜。
Do you remember all years when scientists argued that smoking would kill us but the doubters insisted that we didn't know for sure?
还记得那些年吗？当初，科学家提出吸烟会导致死亡，而怀疑者们却坚持认为我们还不能确认这一点。
One day, the cat's-meat-man said to him, "Why don't you stop being a doctor for people and become a doctor for animals instead? I'm sure that you know a lot about animals-more than most vets. You wrote a wonderful book about cats. I'd send all the people with sick dogs or cats to you."
一天，卖供猫食用的肉的商贩对他说：“你为什么不停止为人类看病，转而为动物看病呢？我相信你对动物的了解比大多数兽医还要多。你写了一本关于猫的好书。我会把所有带着生病的猫狗的人都送到你这里来。”
Sure, it's good for your project and your career, but the more you know, the better your chances of solving a related problem.
毫无疑问，教育对您的项目和职业非常有利，但是您知道得越多，解决相关问题的机会就越多。
The ICONS are in the source code for this article (see Resources), but I'm sure you know a graphics expert who can draw better ones!
图标在本文的源代码中给出(请参阅参考资料)，但是我敢肯定您认识有比这画得更好的图形专家！
So fear not - you already have and know enough - new skills will come for sure as you progress on your journey.
所以不要担心你已经拥有或知道的不够多——新的技术在你的旅程中自然会到来的。
I can't blame you for what you have decided but I hope that you could understand. Our country is now in a sea of problems. And I know for sure that we helped you in a way or another.
我不能指责你们的决定但我希望你们理解，我们的国家面临着无数的难题，我也知道我们会为你们提供这样或那样的帮助。
This is what I know for sure: in order to be truly happy, you must live along with and you have to stand for something larger than yourself.
我可以非常肯定的是为了追求真正的快乐，你必须为了一些更有意义的事而生活。
Before you get a piercing, make sure you know if you're allergic to any metals. Only nontoxic metals should be used for body piercings, such as.
所以穿刺前，确保你自己知道否对某种金属过敏。
But ask your doctor if this is the best drug for your depression and make sure you know about any interactions.
但是最好询问医生，这些对于你是否是治愈抑郁最好的药物，并确认了解药物之间的相互作用。
Prince: I believe that we have a mission, you know, to tell the western world held by America for sure, is that the Arabs are good businessmen, good honorable people.
王子：我相信我们身负一个责任，你知道，就是告诉西方世界（当然是以美国为首的）：阿拉伯人是好的生意人，是善良诚实的。
Maybe it'll never be right for your company, but you won't know for sure without giving it a try.
也许它永远都不会适合于您的公司，但是，如果不尝试一下，您就不会确切地知道这一点。
In the real world, although you might guess, based on the circumstances, whether or not you will meet someone again, you cannot know for sure.
在真实世界里，尽管你可以根据环境猜想是否会再次遇见某人，但是你并不能肯定。
Let me emphasize: This is the only time you will ever know for sure that disaster is about to strike!
我要强调一下：灾难的发生是不可预测的，但是灾难恢复测试时间是确定的。
Basically, we still don’t know for sure - but the important thing is to find out what you’ve got and what you like.
基本上我们也不是太确定---但是重要的是去发现你有什么和你喜欢什么方式。
Basically, we still don’t know for sure - but the important thing is to find out what you’ve got and what you like.
基本上我们也不是太确定---但是重要的是去发现你有什么和你喜欢什么方式。
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