'I'm not sure I can make it tomorrow,' he said edgily.
“我不敢肯定明天能成功。”他紧张不安地说。
I'm not sure I can walk so far.
我没有把握能步行这么远。
Whether or not we're successful, we can be sure that we did our best.
不管成功与否，我们确已尽了最大努力。
I'm not sure—I can find out for definite if you like.
我没把握—如果你愿意我可以去核实。
We are not sure how well we can reproduce the melodies or rhythms, because they were apparently improvised in many cases.
我们不确定我们能多完整地重现旋律或节奏，因为它们显然在很多情况下是即兴创作的。
We can earn more money in the future, but I'm not sure we can change men's attitudes.
将来我们可以赚更多钱，但我不确定我们能否改变男人的态度。
I'm just not sure we can compare it with the industrial age.
我只是不确定能否将其与工业时期相比。
"I am not sure that I can allow it," answered Dr. Craven.
“我不敢肯定我能允许你这么做。”克雷文医生回答。
I'm not sure if they make you pay a deposit, but I think you can just check them out, and then you'll have them for the semester.
我不确定他们是否要你付押金，但我想你可以去看看，然后这学期就可以用了。
By listing what you need to do on any special day, you can make sure to keep all for your appointments and not worry whether you've forgotten something.
把你在任何一个特别的日子需要做的事情列出来，你就能确保你的约会都按时完成，而不用担心你是否忘记了一些事情。
Be sure not to take extra breaks or too long breaks as it can affect your plan.
确保不要有额外的休息或太长时间的休息，因为这会影响你的计划。
One can never be sure that it is not on the point of breaking out into action.
人们永远无法确定它是否即将付诸行动。
How can you make sure not to waste this great chance to learn?
你如何确保不浪费这个绝佳的学习机会？
I am not quite sure. Can you give me some advice?
我不是很确定。你能给我一些建议吗？
I want to go to Qinghai Museum, but I am not sure how I can get there.
我想去青海博物馆，但是我不知道怎么去。
I'm not sure whether the glaciers can regrow even if the planet's temperature is controlled.
我不确定即使地球的温度得到控制，冰川是否能再生。
—Can you have a picnic with me this Sunday, Cindy? —I'm not sure.
——辛迪，这个星期天你能和我一起去野餐吗？ ——我不确定。
If they're not sure about something they hear, it can turn into a more formal lesson once back in the classroom.
如果他们对听到的东西不是很确定，就可以把这些东西以更正式的形式在课堂上展开。
I'd like to go, but I'm not sure if I can find the time.
我想去，又怕没时间。
That's not a hard job. I'm sure I can manage it myself.
这活儿又不重我一个人顶得下来。
We can never be sure that they are not parodistic.
我们永远无法确定这些是不是一种戏仿。
Swinggcat: I'm still not sure we can hang.
我仍然不能确定我们可以在一起。
Sure, not everyone can start for free, but you can start small.
当然，不是每个人都能免费启动自己的事业，但你完全可以少花钱。
Yet I'm still not sure I can go through with it.
然而我还是不能确定这次能否过关。
Not sure you can take advantage of CSS3 yet?
不确定你可以利用CSS3吗？
But without more data, I'm not sure we can say if it's more than just a coincidence.
由于缺乏更多数据，我还不能肯定说这只是巧合。
I am not sure: "Can you do some information trading this Friday evening?"
我不能确定：“你能在这个星期五晚上做一些信息交易吗？”
I'm not sure anyone can answer that question just yet.
我不敢肯定此刻有谁能够回答这一问题。
But I'm still not sure I can take you around my cool friends.
但我还是不确定能不能带你去见我那些很酷的朋友。
But I'm still not sure I can take you around my cool friends.
但我还是不确定能不能带你去见我那些很酷的朋友。
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