I hear on the bush telegraph that the manager has resigned.

我得到的消理已辞职。

I heard on the grapevine that you’re leaving.

我听消说你要离开。

I'd heard on the grapevine that the business was nearly settled.

我听到有消在说，这笔业务已差多定下来了。

I heard it on the grapevine.

我消听到的。

Everyone knew about it before it was officially announced: the bush telegraph had been at work again.

还没有正式宣布大家就都知这事了，又消传出来的。