1. engage in
eg: He was engaged in medical research. 他从事于医学的研究
2. 你也可以用些小词，很多时候英语不是非要用很高深的词语的，比如从事，你就可以用do
eg:People do farming, grazing or forestry. 人们或从事农耕，或从事放牧，有的则从事林业
3. 有的时候从事这个词也可以不翻译出来，只是在中文表达上有
eg:She' s very creative ; she writes and paints. 她很有创作能力，既从事写作又从事绘画.
希望对你有所帮助，谢谢
2.从事于用英语怎么说从事于
基本翻译
work on
employ oneself in
be engaged in
go in for
be concerned with
效力 [[xiào lì]]
基本翻译
potency
efficacy
virtue
render a service to
offer one's help
3.从事,忙于 用英语怎么说从事
cóng shì
（投身到） go in for; devote oneself to; be engaged in; be busy with; busy sb. with; be occupied in (with); occupy oneself with; be bound up in; be about; be concerned with; take part in; take up; go about; get busy; take to; take up with; work on; throw oneself into:
从事科研工作 be engaged in scientific research
从事戏剧活动 engage in dramatics
他从事这本词典的编纂工作已达10年之久。 He has been engaged 10 years on the dictionary.
（处理） deal with; handle:
军法从事 deal with according to military law; court-martial
慎重从事 act cautiously; steer a cautious course
做这样事情要慎重从事！ Be cautious in doing such a matter!
忙于
máng yú
be busy at (about; over; with); busy oneself with (at; in); on the wing:
忙于工作 be busy at work
蜜蜂忙于采蜜。 The bees busied themselves at making honey.
他正忙于为他的小说收集资料。 He is on the wing gathering material for his novels.
