collaborate

collaborate, cooperate

动词 collaborate:

1. work together on a common enterprise of project
   同义词：join forces, cooperate, get together
2. cooperate as a traitor

1. Preliminary report from the American Economic Mission now in Greece, and reports from the American ambassador in Greece, collaborate the statement of the Greek government that assistance is imperative if Greece is to survive as a free nation.
   现仍在希腊的美国经济代表团的报告，以及美国驻希腊大使的报告，同样证明了希腊请求援助的迫切性，否则希腊将不再以自由国家的身份存在。
2. He was suspected of collaborating (with the enemy).
   怀疑他(与敌人)勾结。
3. She collaborated with her sister/She and her sister collaborated on a biography of their father.
   她和姐姐合作写父亲的传记。

col.lab.o.rate

v.intr.（不及物动词）
col.lab.o.rat.ed,col.lab.o.rat.ing,col.lab.o.rates
To work together, especially in a joint intellectual effort.
协作，合作：一起工作，尤指在智力方面的致力合作
To cooperate treasonably, as with an enemy occupation force in one`s country.
勾结：叛逆地合作，如同侵占自己国家的敌人合作

来源：
Late Latin collabôr3re collabôr3t-
后期拉丁语 collabôr3re collabôr3t-
Latin com- [com-]
拉丁语 com- [前缀，表.一起.]
Latin labôr3re [to work] from labor [toil]
拉丁语 labôr3re [工作] 源自 labor [辛苦]

【引伸】
collab.ora.tion
n.（名词）
collab.ora.tive
adj.（形容词）
collab.ora.tor
n.（名词）