1 a horse pill 大药丸，大型丸剂。

This is not a horse pill. This is your pain pill which doctor prescribed1.

这不是大药片。这就是大夫给你开的止疼药。

2 a horse laugh 狂笑，讥笑，不信赖的笑。

At the end of the joke she gave a horse laugh that could be heard a street away.

在那个笑话结束时，她发出一阵狂笑，隔着一条街都能听到。

3 a horse of a different color 完全是另一回事。

Taking the exam is one thing but passing it is a horse of a different color.

考试是一回事；通过考试又是另一回事。

4 be on ones high horse 趾高气扬，藐视别人。

Since Bob was elected president of the club, hes been up on his high horse.

自从鲍勃当选为会所主席以来，他就趾高气扬起来了。

5 beat a dead horse 徒劳无益，白费口舌。

I hate to beat a dead horse, but it is very important that you understand this before you leave.

我不想画蛇添足，但你离开以前需要知道这个。