一旦魔法施放出去，即使您在伙伴或者敌人当中，也仅使敌人受到伤害。

Once cast, even if you are in a group of Allies and enemies, only your enemies will feel any effects.

youdao

但是，如果环境危急，存活机会不大——比如饥荒或者敌人众多的时候——那么人们会采取短期策略来传宗接代。

But if the environment is dangerous and your chances of survival are low - if there is a famine or more enemies - then people will adopt short-term strategies which allow them to reproduce more.

youdao

所以我们本能地把所有陌生人当作潜在的伙伴.朋友或者敌人 但是你的快乐和存在不依赖于你和陌生人的关系 你和鞋店店主或者机场的路人有无差别并不重要.

But your happiness and survival today don’t depend on your relationships with strangers. It doesn’t matter whether you get a nanosecond of deference from a shopkeeper or a stranger in an airport.

youdao

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

What this did was it established a super ordinate goal, that is a goal that everybody shared, and perhaps more important a common enemy.

这个方法设立了一个最高目标，所有队员都分享一个共同的目标，或者更准确地说，一个共同的敌人。

耶鲁公开课 - 心理学导论课程节选

You never really hear of Joe Blow who killed thirty-four guys in the phalanx.

你从没听说过,张三或者李四,在方阵中手刃三十四名敌人

耶鲁公开课 - 古希腊历史简介课程节选