Subject + 从事 + Activity/Profession
从事 (cóngshì) is a verb meaning "to engage in," "to undertake," or "to be involved in." It describes participation in a profession, activity, or field of work. It is a formal expression commonly used in written Chinese, as in 从事活动 (to engage in activities).
她从事教育工作已经二十年了。
Tā cóngshì jiàoyù gōngzuò yǐjīng èrshí nián le.
She has been working in education for twenty years.
他一直从事科学研究,发表了很多论文。
Tā yìzhí cóngshì kēxué yánjiū, fābiǎo le hěn duō lùnwén.
He has been engaged in scientific research and has published many papers.
毕业后你打算从事什么行业?
Bìyè hòu nǐ dǎsuàn cóngshì shénme hángyè?
What industry do you plan to work in after graduation?