不能肯定

I think that's right ,but I can't sure it

我想那是对的，不过我也不能肯定。

I am not sure enough to tell you when I will come.

我不能肯定地告诉你我什么时候来。

By no means am I sure it is the right thing to do.

我一点也不能肯定这样做是对的。

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

我不能肯定地告诉你我什么时候来。

I can't surely to tell you when I will come.

我不能肯定地告诉你我什么时候来。

I thought I saw him leaving,but I couldn't swear by it.

我好象看见他离开了，但我不能肯定。

Whether it was used to feed ghosts or symbolize life we aren't sure.

无论是用于饲料鬼，象征着生命，我们不能肯定。

I doubt if such a foreign custom will take root among these people.

我不能肯定这样的外国习俗是否会在这些人之间生根。

Learned to be talktive as an officer, I want to be as inward as possible, instead of so aggressive.

那个人，每次都是那个人，曾经带走我一切的那个人，到现在我都不能肯定他真的爱过我。

I think that's right,but I am 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。