一个很难说明白的英语问题

be engaged on:
着手 从事
1. You are also very likely to be engaged in mediation on behalf of your employer, since so many companies are now switching over to using internal and external mediation in at least some employment and contract disputes.
你也很有可能要代表上司进行调解,特别是现在很多公司在处理职场或合约上的纠纷或多或少采行由内部或外部的机制来进行调解。
myoops.fgu.edu.tw

2. Be engaged in research work on feasibility of hydraulic projects ,draft design, and provide consultation and inspection the cost and quality supeersion of the project.
从事水利工程项目可行性研究、初步、技术设计及造价和质量监督、监理的工程技术审查咨询。
www.jszx.org.cn

3. Five minutes after conceding that a dictator is wicked but must be engaged anyway, diplomats will point to “promising” signals on human rights that can be linked to any EU talks.
比如说，多数政治观察家设想，为了能源与战略上的利益，由德国领导的力量致使了欧盟对乌兹别克斯坦的制裁延缓，但那些提倡制裁的外交官们却认为他们有必要说欧盟的做法开始转好了。

be engaged in
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