[] to make yourself responsible for sth and start doing it 进行；着手；承担；接受；从事◆The company is to undertake a major cost-cutting programme. 这家公司将实行大规模的成本削减计划。◆to undertake a task/project 承担一个任务／项目◆No payment has been received for the work undertaken in July. 七月份的工程款尚未收到。⨁to undertake a programme / project / task 承接计划／项目／任务⨁to undertake an analysis / investigation / a study 进行分析／调查／研究⨁to undertake reforms / research / work 从事改革／研究／工作
[] to agree or promise that you will do sth 答应；同意◆He undertook to finish the job by Friday. 他答应周五完成这项工作。