But he added, he did not know for certain.
但是他补充说，他也不确定。
We may not know for sure who said it first.
我们也不清楚是谁最先说的这句话。
We do not know for sure yet if this is the only "1%" bug.
我们还不确定这是不是导致“1%”问题的唯一臭虫。
I would not know for all users, but a cookie is a good option.
我不知道所有用户的cookie，但是是一个很好的选择。
Mr Suttles said he "did not know for certain" why it had failed.
Suttles先生说他“并不十分确定”前种方案失败的原因。
I will not easily pass What I do not know for sure on to others.
尚未肯定过的事实，不要轻易地传给别人听。
What I do not know for sure, I will not easily pass on to others.
尚未肯定过的事实，不要轻易的传说给别人听。
I think I will remain one more year, but I do not know for sure yet.
我想我可以至少呆一年，但是我还不确定。
We may not know for sure, but we do know what each of her potential babies would look like!
我们不知道答案，但是我们可以知道这个孩子会长什么样！
This was not the best of it; for the dwarf said, "I know thee."
这还不是最好的；因为小矮人说："我认识你。”
We do not toll for little Kay; we do not know him.
我们不为小小的加伊而敲丧钟；我们不认识他。
They did not know what their captors planned for them.
他们不知道捉他们的人要对他们做什么。
It must be worrying for you not to know where he is.
你不知道他的下落一定很着急。
She cried and raved for weeks, and people did not know what to do.
她又哭又叫了好几个星期，大家不知道怎么办。
For all we know, he may not even be in this country.
说不准，他或许都已不在这个国家了。
We all know that she is not fashioned for a life among strangers.
我们都知道她不适合去陌生人中间生活。
We do not know whether lower carbon footprints will always be better for biodiversity.
我们不知道低碳足迹是否总是有利于生物多样性。
He felt hatred for the students who did not know the value of hard work.
他憎恨那些不懂得努力学习的价值的学生。
She did not know what to say, so for a whole minute, she said nothing.
她不知道说什么，所以整整一分钟，她什么也没说。
You have to be good but not an expert at everything you do, and you have to know when to be flexible and when to ask for help.
你不需要事事都是专家，但是必须事事都能做好，并且你得知道什么时候灵活多变，什么时候寻求帮助。
For those of you not in the know, the game is all about math skills.
对于你们那些不知情的人来说，这款游戏完全关于数学技能。
"Forgive them, for they know not what they do".
原谅他们吧，他们不知道自己做了什么。
Watch therefore: for ye know not what hour your Lord doth come.
所以你们要儆醒，因为不知道你们的主是那一天来到。
Take ye heed, watch and pray: for ye know not when the time is.
你们要谨慎，儆醒祈祷，因为你们不晓得那日期几时来到。
We know that that's not true for planets.
但我们知道，行星的情况不同。
What we expressed to them is that we know they did not ask for this.
我们向他们表明的就是我们知道他们不要对这件事有什么刻意要求。
What to do she did not know, for the broth must be made.
她不知道该怎么办了，因为肉汤必须要做好。
Do not ask for what you already know.
不要寻找您已经知道的东西。
Do not ask for what you already know.
不要寻找您已经知道的东西。
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