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- I think he lives there but I couldn't say for sure. 我想他是住在那里的，但我不敢肯定。
- You can't say for sure that it won't rain tomorrow. 明天难保不下雨。
- I can say for sure that someone has buggered about my radio. 我敢说有人摆弄过我的收音机。
- I think he'll be back on Monday, but I can't say for sure. 我想他星期一会回来，不过我不敢肯定。
- Why this universal law prevails we cannot say for sure. 这个普遍规律为什么存在，我们尚不能确切地说明。
- I cannot say for sure if it was your visual illusion. 我不能肯定这是不是你的视错觉。
- Now, I can't say for sure, but he was definitely an alien. 现在,我还不敢确定,但是,他肯定是个外星人。
- I can't say for sure because I don't know the details. 我不了解细情，所以不好说。
- I can say for sure that the email will never take the place of the letter. 我敢肯定，电邮不会取代信件。
- The president hinted at changes in the cabinet But didn't say for sure. "总统暗示内阁可能会改变,但是没有确实说出来。"
- But who can say for sure the " magical" Milutinovic would not create another wonder? 但是谁能肯定说“神奇的”米卢不会再创奇迹呢?
- We cant say for sure but we hope its going to fetch over$20million, Kneller said. 科内尔说：“我们不能肯定地说，但我们希望它能卖出超过2000万美元的价格。”
- Suddenly he felt a jolt, as if he had heard some sound or been struck by some idea-he couldn't say for sure. 忽然心中一动，像想起一些什么，又似乎是听见了一些声响，说不清；
- After four months, I can say for sure: Bo-bo, Li-peng, Shonny and Yuan-yuan, thankyou for your sincere friendship. 四个月份以后，我肯定能说：波波，李鹏和媛媛，谢谢你们的认真的友谊。
- I can't say for certain when he will arrive. 我说不准他什么时候会来。
- No one can say for sure how many men of letters in history have been to this beautiful place to enjoy the charming scenery and the seclusion it offers. 古往今来，这名山胜水吸引了多少寻幽探胜的骚人墨客!
- I can't say for certain what to do. 我说不准该做什么。
- But in modern football you can never say for sure who will qualify because there are so many factors to be taken into account. 但是在现代足球中,你永远都无法确定地说谁将会晋级,因为有太多因素要计算在考量范围内。
- She won't dare do that again, and that's for sure. 她不敢再干那事了，那是毫无疑问的。
- The FDA can't say for sure what cause the reactions but suspects it's a contaminant in an ingredient supplied from the Asia nation. 目前尚不能肯定具体是什么原因导致了过敏反应，但怀疑是一种由亚洲国家供应的抗凝血剂成分受污染所致。
