1. 词汇：from the horse’s mouth

释义：If you get a piece of information from the horse's mouth, you get it directly from someone who is involved in it and knows most about it.（来自可靠的来源）

起源：它的意思是：你听到的消息是真实的，因为这消息来自可靠的来源。马和消息可靠又有什么关系呢？远在人们还没有使用汽车的年代，他们依靠马作为主要的交通工具，因此认为马是十分可靠的。

例句：A: Is our test really getting rescheduled?

我们的考试真的改期了吗?

B: Yep, our teacher was ahead of me in the lunch line, so I heard it from the horse's mouth.

是的，我们的老师排在我前面去买午饭，所以我听到这消息绝对可靠。

I know the truth from the horse’s mouth.

我从知情者那里知道了真相。

When he hears, straight from the horse's mouth, what a good worker you are, he'll increase your wages.

当他得知你是一个好工人这情况是真实的，他就会给你增加工资。

2. 词汇：straight from the horse’s mouth

释义：From the original or most reliable source. （直接来自可靠的来源）

例句：This comes from the horse's mouth, so it has to be believed.

这消息完全可靠，所以必须相信。

I tell you I know for certain that Lisa will be promoted to be a manager. The boss told me himself, so it's straight from the horse's mouth!

告诉你，我知道莉沙肯定会被提升为经理的。这是老板亲口告诉我的，这个消息是绝对可靠的！

Say, did you hear that Sally and Bob are going to get married. Honestly, I'm not joking. I heard it from Bob himself, so it's straight from the horse's mouth!

喂，你听说了没有，萨利和鲍勃要结婚了。我可不是开玩笑，我说的是实话。我是听鲍勃自己讲的，因此这消息是完全可靠的！

Most of the book is completely true; it comes straiaght from the horse's mouth.

这本书的大部分内容是完全真实的，这消息完全可靠。

A: How do you know he’s leaving?

你怎么知道他要走了?

B: I got it straight from the horse’s mouth. He told me himself.

我得到的消息绝对可靠，是他自己告诉我的。