您要查找的是不是：
- You cannot be sure of appearances. 自所见相无法决定。
- That can not be sure about perhaps. 或许不能肯定。
- I cannot be sure of my future plans. 我还没有明白地定下我将来的计画。
- I cannot be sure but I believe it worths trying. 我不能确定但这值得一试。
- We can not be sure what you want unless you tell us. 希望妳能告诉我们，要不然我们无法确定妳想要的是什么。
- Be sure the private papers cannot be got at by curious eyes. 千万不要让好奇的人看到这些机密文件。
- Purchasers cannot be sure that what they buy they will truly own. 买家们不知道他们是否能够真正拥有他们所购买的东西。
- Most people feel they cannot be sure of what they heard in the recording. 大多数人感到他们不能确定在录音中听到的内容。
- Just as you cannot be sure? why you struggle financially while your peers enjoy abundance. 同样，你也无法明白为什么你生活拮据、疲于谋生，而你的朋友却生活优裕。
- China Steel Association can not be sure it is not thought, but for such terrible "ambition", we can not but alert. 不敢肯定中钢协是不是这么想的，但对这种可怕的“野心”，我们却不能不警惕。
- And so is the nebulousness of Chinese property laws.Purchasers cannot be sure that what they buy they will truly own. 中国的财产法的模糊性也是让人担心的，购买者并不确定他们买下来的就真的属于他们自己了。
- We cannot be sure that no forces act just because no other bodies touch or are very close to a given body. 即使一个物体没有别的物体同它接触或者离它很近,我们也不敢担保没有力作用于它。
- Be sure to choose toys that are made for puppies and cannot be splintered, torn apart or swallowed. 选择那些专门为狗狗设计的不易咬碎的和不易被咽下的玩具。
- Such evil practice cannot be swept away at once. 这种坏事不是一下能扫除干净的。
- Just as you cannot be sure why you struggle financially while your peers enjoy abundance. 同样，你也无法明白为什么你生活拮据、疲于谋生，而你的朋友却生活优裕。
- One cannot be too careful in choosing friends. 择友愈谨慎愈好。
- Some of the lining epithelia appear mucinous, but I cannot be sure without high power views. 部分衬覆上皮呈粘液性，但因未提供高倍图像，我不能确信。
- They cannot be trusted in the slightest degree. 对他们一点也不能相信。
- This rule cannot be applied to every case. 这项规则不是所有情况都使用。
- I made a mistake that can not be rectified. 我犯了一个无法改正的错误。
