不要听朋友的坏话，也不要说敌人的坏话。

Hear no ill of a Friend, nor speak any of an Enemy.

youdao

他们的国家将会更易博得朋友的喜爱，不易引发敌人的仇恨。

Their country will now be easier for its friends to like and harder for its foes to hate.

youdao

昆虫世界中鲜艳的色彩常常是对敌人的一种警告：不怕死的就来吃我吧。

In the insect world, bright reds, oranges and yellows can be a warning: "Eat me at your own risk, Pal."

youdao

He tells us, to get a little bit ahead of ourselves, that justice is helping your friends and harming your enemies.

他告诉我们稍微设想一些未发生的事，正义会帮助你的朋友,并击败你的敌人。

耶鲁公开课 - 政治哲学导论课程节选

That's the fundamental mistake, as they see it, that their enemies of various kinds make in their understanding, in their approach to literature.

这是他们的根本错误，在他们看来，他们，敌人，干涉对文学的理解。

耶鲁公开课 - 文学理论导论课程节选

So an adversary who's actually trying to break your programs 'cause frankly too much software these days is not written with a paranoia in mind.

或者说是你的敌人,而且千方百计地要破坏你的程序,唉，这种漏洞百出的软件我见过的是在太多了。

哈佛公开课 - 计算机科学课程节选