那位科学家对此事一无所知，因为他一直在做他的研究工作的翻译：The scientist knew nothing about it, because he was doing his research work 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

Scientists who know nothing about the matter, because he has been doing his research work

The scientist knew nothing about it, because he was doing his research work

That scientist knows nothing about to this matter, because he is doing his research work continuously

That scientist had no knowledge of the matter, because he has been doing his research work

The scientist knew nothing about it, because he was doing his research work