collaborate, cooperate

動詞 cooperate:

1. work together on a common enterprise of project
   同義詞：collaborate, join forces, get together

1. I am so happy to cooperate with you.
   很高興與你合作。
2. I advise you not to cooperate with that deceitful businessman.
   我建議你不要和那個不誠實的商人合作。
3. Everything cooperated to make our holiday a success.
   這一切湊合起來使我們的假期圓滿過去。
4. We want to cooperate with you greatly.
   我們非常愿意與你們合作。

co.op.er.ate

v.intr.（不及物動詞）
co.op.er.at.ed,co.op.er.at.ing,co.op.er.ates
To work or act together toward a common end or purpose.
合作：為共同的目標(biāo)或目的而合作或共同起作用
To acquiesce willingly; be compliant:
順從：情愿地默然同意；遵從：
例句：
asked the child to cooperate and go to bed.
讓孩子聽話并且去睡覺

To form an association for common, usually economic, benefit:
協(xié)作：為了共同的（通常是經(jīng)濟上的）利益而形成的協(xié)會或聯(lián)合團體：
例句：
When buyers cooperate, they can make large wholesale purchases at a discount.
如果購買者聯(lián)合起來，他們可以打折扣買大批的批發(fā)商品

來源：
Late Latin cooper3ro cooper3t-
后期拉丁語 cooper3ro cooper3t-
Latin co- [co-]
拉丁語 co- [前綴，表.合作.]
oper3ro [to work] from opus oper- [work] * see op-
oper3ro [從事工作] 源自 opus oper- [工作] *參見 op-

【引伸】
coop.era.tor
n.（名詞）