However, we don't know for sure.
然而，我们仍然不能确信。
Well, I don’t know for sure either.
我也不知道。
我们可能永远无法确定。
你怎么能把握得住呢？
你什么时候会确信？
您肯定的事情是什么？
I know, I know, I know for sure.
我知道，我知道，我当然知道。
你不可能确切知道。
I wonder when we'll know for sure.
我想知道什么时候才有准确的消息。
Really? When will you know for sure?
真的吗？你什么时候能肯定？
I know for sure that this is a rope.
我肯定知道这是一条绳子。
But I know, I know, I know for sure.
但是我知道，我知道，我能确信。
我不能肯定。
Me too. I wish we could know for sure.
我也是。我希望我们能知道得确切些。
我不确切知道。
That is the only thing we know for sure.
这是我们唯一确定的事情。
You haven't seen it. How do you know for sure?
你还没有见过，你怎么能肯定呢？
If you never act, you will never know for sure.
不逼自己，永远不知道自己有多大能耐。
I don't know for sure. You can ask others, please.
我不是太清楚，请你问一下别人吧。
But I know for sure that she was my mother's best friend.
可是我知道了，她就是我妈妈的好朋友。
I figured that would be the only way to know for sure.
我想这是知道真相的不二法门。
Do you know for sure that I love you more than anything?
你相信我爱你胜过一切吗？
And I know for sure that we helped you in a way or another.
我也肯定我们在某方面帮助过你们。
And I know for sure that we helped you in a way or another.
我也肯定我们在某方面帮助过你们。
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