不能肯定的

You don't even know the toenail was the vic's.

那你也不能肯定这片趾甲是否是受害人的啊

At ten o'clock this morning it was still a toss-up whether we should be able to get here.

今早十点钟的时候还不能肯定我们是否能够到达这里。

Well, we are not sure about this, and very few pieces of software can tweak PDF files.

那麼，我们不能肯定这一点，很少件软件可以调整的PDF档案。

I'm still uncertain of my feelings for him.

我仍不能肯定我对他的感情。

I'm uncertain of their stand in the matter.

我不能肯定他们在该事件中的立场。

I'm afraid I'm unsure of the facts of the case.

很遗憾我不能肯定这件事的事实。

Or, take the easy way and invest in a water meter if you are not sure.

还是采取最简单的办法，并投资于一个水表，如果你不能肯定。

I think it is right while i'm not sure.

我想那是对的，不过我也不能肯定。

I think that is right, bu i can not be sure.

我想那是对的，不过我也不能肯定。

I guss that is right ,but I an not sure.

我想那是对的，不过我也不能肯定。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。