There is truth, and there is untruth.

那是真理，而那是谎言。

I steadily refuse to tell an untruth.

我断然拒绝说假话。

That is an untruth!

那不是真话！

The untruth has been brought home to him.

对那谎言他已深信不疑。

They have simply followed each other in reporting an untruth.

他们只是跟风撒播一件不真实的事情。