I have it on good authority that we've got the contract.

我有充分根据知道我们已经获得了这个合同。

youdao

I have it on good authority that the talk has been cancelled.

我有充分根据知道这次会谈被取消了。

youdao

Unless he has it on good authority, it is not worth believing.

除非他这个消息有可靠的根据，否则是不足信的。

youdao

The most dangerous thing I tried there was swimming in the ocean, which I've heard on good authority is full of sharks.

WSJ: Dilbert Creator Scott Adams's Year Without Fear

It may be true that girls like the California, but I have it on good authority that plenty of boys do too.

FORBES: How To Do Polo In The Hamptons: Try A Ferrari

We have it on good authority that they will become apparent: intellectual firepower is part of the wealth of nations (Adam Smith, passim).

ECONOMIST: A sorry state