不能肯定

I think that's right,but I'm not definite.

我想那是对的，不过我也不能肯定。

I think that's right, but I'm not sure definitely.

我想那是对的，不过我也不能肯定。

I can't tell you definitely.

我不能肯定地告诉你。

I can't tell you definitely when I will come.

我不能肯定地告诉你我什么时候来。

I can't tell you when I will come definitely.

我不能肯定地告诉你我什么时候来。

Klein: I can't definitively say.

我不能肯定的说。

We are not sure just when the disintegration of the feudal system began.

我们现在也不能肯定，这种封建制度开始解体的确切时间。

I think he is a doctor,but I'm not sure.

我想他是医生，但我不能肯定。

Dr: That might be it but I'm not sure.

可能是，但我还不能肯定。

I'm not sure what I just said, but you get the drift...

我不能肯定我说的是对的，但是你也晕乎乎了

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。