I have it on good authority that your life's in danger.

我有可靠消息 你现在有生命危险。

This is no mere hearsay, I have it on good authority that any dissenting opinions are brusquely pushed aside.

这不是道听途说，我可以为此提供可靠资料证明任何不同意见都被轻率地推到一边。

We have it on good authority you do know.

我们有权威的消息来源，他你肯定知道。

" These letters have been recently discovered. We hear, on good authority, that they will be published almost immediately" .

“最近发现了这些信件。据可靠消息， 我们听说它们几乎会立即发布” 。

I have been told on good authority that people in America and Canada do not say: " Let me have a think."

据权威人士告诉我，美国和加拿大的人不会说：“让我考虑一下。”

I am convinced that the most experienced naturalist would be surprised at the number of the cases of variability, even in important parts of structure, which he could collect on good authority, as I have collected, during a course of years.

我相信，最有经验的博物学家会对可变性案例的数量感到惊讶，即使是在结构的重要部分， 他可以在多年的过程中收集到可靠的权威， 就像我收集的那样。