I'm not certain who was there.
我无法确定谁当时在场。
It's not certain they'll accept that candidate if he wins.
如果那位候选人胜出，无法肯定他们是否会接受他。
We are not certain whether the appendix had already burst or not.
我们不能确定阑尾破了没有。
The company's financial position is not certain.
这家公司的财务状况不明朗。
To be honest, I'm not certain.
老实说，我不能肯定。
你不够肯定。
He seems not certain of his way.
他好像对自己要走的路不太确信。
But that outcome is not certain.
但具体的结果不一定如此。
我也不确信这个消息。
I'm not certain how this will end.
我不能确定这将如何结束。
Once again, if you're not certain, ask.
再次提醒，如果你不确定那就去问个究竟。
I am not certain whether he will come.
我不能肯定他是否会来。
I'm not certain if he's telling the truth.
我不能肯定他是否在说真话。
It's not certain how much it will cost.
这要花多少钱还不确定。
I am not certain (about) where he lives.
我不太确定他住在哪里。
Alas, further liberalisation is not certain.
可惜，我们却不能确定自由化能否更进一步。
I was not certain whether he had seen me.
我不能肯定他是否已看见我。
还不确定。
It is not certain when it will take place.
不能确定这事什么时候会发生。
I'm not certain where this ought to be put.
我不能确定这东西该放在什么地方。
They were not certain whether to go or not.
他们不能确定该不该去。
我不确定。
I'm not certain what the effect on the world will be.
我不能确定这会对世界造成什么影响。
It is still not certain such an approach will be taken.
现在仍不能确定是否会动用这个办法。
Yet it is not certain that this trend will persist.
但仍未确定这趋势是否能延续。
I'm not certain if I can go to Shanghai next month.
我不确定我下个月是否能去上海。
Scientists are not certain why the oxygen level dropped.
科学家们现在还不能断定为什么含氧量会下降。
She was not certain about the grammar and some of the idioms.
她对语法和一些成语没有把握。
He was not certain if he really wanted to be a dentist anyway.
他不肯定自己是否真的想成为一位牙医。
He was not certain if he really wanted to be a dentist anyway.
他不肯定自己是否真的想成为一位牙医。
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