这些名词均有“同事，伙伴”之意。
associate ：普通用词，侧重指在利害关系上密切相关。
- business associates
业务伙伴 - the restaurant owner's business associates
餐馆老板的商业伙伴
companion ：指陪伴他人的人，即同伴或陪伴。
- Fred had been her constant companion for the last six years of her life.
在她生命的最后6年，弗莱德一直是她忠实的伴侣。
comrade ：指具有共同的事业、利益关系相一致的人。
- Unlike so many of his comrades he survived the war.
和许多战友不同，他在战争中幸存下来。
colleague ：一般用于对同事的正式称呼，基本上专用在职业关系上。
- We were friends and colleagues for more than 20 years.
20多年来我们既是朋友又是同事。 - the Prime Minister and his Cabinet colleagues
首相及其内阁同僚
fellow ：多用复数形式，指一块住、生活或同行共事的人。
- She has a very good reputation among her fellows.
她在同事中的口碑甚佳。 - People looked out for one another and were concerned about the welfare of their fellows.
人们守望相助，关心着彼此的幸福。
partner ：指事业中处于合伙关系的人，或指婚姻、游戏、跳舞中的另一方。
- a partner in a law firm
法律事务所的合伙人 - Wanting other friends doesn't mean you don't love your partner.
想交其他朋友并不意味着你不爱你的伴侣。 - to dance with a partner
和舞伴跳舞
