参考例句：We've been pals for years 我们是多年的哥们儿了

BFF(best friends forever)闺蜜;

参考例句：Last week I met a couple of girlfriends for dinner 上周我和几个闺蜜见面吃饭

confidante 红颜知己;

参考例句：You constantly tell yourself that she is only your confidant 你一直告诉自己她只是一个红颜知己

colleague 同事;

参考例句：He was fired from his job after roughing up a colleague 他因为对一位同事动粗而被开除了

intimate 至交;

参考例句：He is my intimate 他是我的至交

sworn brother 结拜兄弟;

参考例句：According to an early tradition became his sworn brother 根据一条过去的传统,他成为他的结拜兄弟

partner 搭档;

参考例句：Your partner should then pass the ball back to you 然后你的搭档应该将球回传给你

companion 同伴;

参考例句：You come over as a capable and amusing companion 你给人的感觉是一个能干、风趣的同伴

pen pal 笔友;

参考例句： It's from my pen pal George in Australia 它是我在澳大利亚的笔友乔治写来的

comrade-in-arms 战友;

参考例句： There was a great deal of soldierly good fellowship 这里充满了战友间才有的那种真挚友谊

bosom friend 知心朋友;

参考例句：He spends every evening drinking in the pub with his cronies 他每天晚上都跟知心朋友到酒馆喝酒

childhood sweetheart 青梅竹马

参考例句：I married Shurla, my childhood sweetheart, in Liverpool 我在利物浦和我青梅竹马的恋人舒拉结婚了