去不去，我们还不能肯定。
现在，我们还不能肯定将会发生哪些情况。
Right now, we're not sure which scenario is going to happen.
但是这在改进IBD患者治疗方面我们还不能肯定。
What it means in terms of improving treatments for IBD patients, we are not sure yet.
现在，我们还不能肯定。让我们盼望最好的…我得走了，但是我晚些时候还会回来查看。
Well, we dont know for sure. Lets hope for the best... I have to go now, but Ill check back later.
现在，我们还不能肯定。让我们盼望最好的…我得走了，但是我晚些时候还会回来查看。
Well, we don't know for sure. Let's hope for the best... I have to go now, but I'll check back later.
虽然我们还不能肯定地说这是由于人类燃烧矿物燃料引起的，但是不可否认，气候系统正在发生灾难性变化。
While it is still not possible to say with certainty that this is caused by human beings burning fossil fuels, it is undeniable that catastrophic changes are going on in the climate system.
拉斯姆森触犯了车队的规定拉波银行车队的一名发言人说道：我们还不能肯定车队是否会继续本届环法之旅。
"Rasmussen has violated the rules of the team," a Rabobank team spokesman said. "It is not sure if the team will continue in the race."
我们还不能肯定，为什么更多的财富和更好的健康，会直接导致他们有着较高的自尊心。但它们之间似乎存在有着某种联系。
We cannot know for certain that more wealth and better health directly lead to higher self-esteem, but it does appear to be linked in some way.
我们仍然素不相识，因此我还不能肯定是否真心爱你。
I do not know you so I can not say if I have love for you in my heart.
我们仍然素不相识，因此我还不能肯定是否真心爱你。
I do not know you so I can not say if I have love for you in my heart.
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