公司有1000名人员，其中120人从事研究与开发的翻译：Company has 1000 officers, of whom 120 were engaged in research and development 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Company has 1000 staff, 120 of whom engaged in research and development

Company has 1000 officers, of whom 120 were engaged in research and development

The company has 1000 personnel, 120 people are engaged in the research and the development

company has more than 1,000 staff, of whom 120 were engaged in research and development

Company has 1000 officers, of whom 120 were engaged in research and development