不能肯定

I can't tell you for certain when I will show up.

我不能肯定地告诉你我什么时候来。

I think it is right, but not for sure.

我想那是对的，不过我也不能肯定。

I think that's right,but I don't know for sure.

我想那是对的，不过我也不能肯定。

I think that's right,but not for sure.

我想那是对的，不过我也不能肯定。

I suppose that's right, but I am not for sure.

我想那是对的，不过我也不能肯定。

Gaillard said: I'm not sure he made mistakes.

Gaillard说：我不能肯定他是否误判。

I wasn't sure if my face betrayed my shock, but I returned to gazing at

我不能肯定我的表情是否泄露了我的震惊。

I am not sure to tell you when I will get there.

我不能肯定地告诉你我什么时候来。

We cannot be certain that Gonium, pandonina, Eudonna, and Pleodorina represent stages in the evolution of multicellular Volvox from unicellular chlamydomonas.

我们不能肯定盘藻、实球藻、空球藻和杂球藻代表从单细胞衣藻到多细胞因藻的各进化阶段。

I am sorry, I'm not sure I have gotten the point of what you said.

对不起，我不能肯定我明白了你的意思。

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。