collaborate
vi.
-rated, -rating
协作；合作；合著
通敌；与敌人合作
"During the wartime, anyone who collaborated might be sentenced to be shot."
战争期间所有叛国通敌的人都可以判处枪决。
cooperate
vi.
-rated, -rating
（常与with连用）合作，合力；协力；协同
If we all cooperate, we'll soon finish.
如果我们大家合作，很快就能完成。
The British cooperated with the French in building the new craft.
英、法两国合作制造这种新式飞船。
（亦作： co-operate）
cooperate
co- ***同 + operate 工作