合作( collaborate的过去式和过去分词 )；勾结叛国；
1. 协调：Coached 辅导 | Collaborated 协调 | Collated 对照,校对
2. 协作：Coached 指导 | Collaborated 协作 | Consulted 请教
3. 合作 Engineered 工程化：Surveyed 调查 | Collaborated 合作 Engineered 工程化 | Kept 保持
4. 合作：coached 教授 | collaborated 合作 | consulted 商议、咨询