[译] 团结一切可以团结的力量，打击主要敌人。
[误] Unite with all the forces that can be united and strike blows at the main enemy.

[正] Unite with all the forces that can be united and strike blows at the chief enemy.
[注] 形容词 main, chief 都可以作"主要的"解。如：The Nile is a chief river in Egypt. 尼罗河是埃及主要河流。/ It is the main street of the town. 那是该市主要的街道。但是 main 只修饰物，而不修饰人；chief 既可修饰人，也可以修饰物。如：The chief persons concerned in project were rewarded. 工程主要有关人员都受到奖励。