Being on one's high horse may drive away one's friends.

如果一个人很骄傲，他的朋友会因此而离开他。

youdao

Don't ride the high horse.

不要骑高马；不要摆架子。

youdao

He is on his high horse these days.

他这几天趾高气扬的。

youdao

Today,if a girl acts like she is better than everyone else, you might say she should get off her high horse.

VOA: special.2009.07.12

It began to infiltrate other disciplines and was in general a high-spirited horse for that certain period of time.

它逐渐渗入到其它学科,总之是那个时代的一匹黑马。

耶鲁公开课 - 文学理论导论课程节选

As each wave came, the boat rose and fell, like a horse starting toward a fence too high to jump.

VOA: special.2010.03.06

It was considered a sanctuary and when Paterno accumulated a record total of wins, the moralists mounted a high horse.

WSJ: What Penn State Should Tear Down

The high horse turned out to be another kind of myth, and underscored the hazard of casting real people as idols, much less statues dedicated while they're still active and coaching.

WSJ: What Penn State Should Tear Down

And the coalition narrative - that it's largely Labour's fault that the country is all but broke - may yet prevail, which would send the opposition' s moral high horse to the knacker's yard.

BBC: Budget: Osborne package will test coalition strength