翻译：what line of business are they in?是关于company activity的吗?

翻译：what line of business are they in?是关于company activity的吗? what is the company's principal field of activity如何翻译 英语翻译company is engaged in the industrial business of manufac 英语翻译是在申请表中的Line of business指的是什么呢 Line of Business(SIA)是什么意思? What are the differences of full costing and activity-based What is difficult when you are inexperienced in an activity What a good time they are having in the park是正确的句子吗? (翻译）What kind of monkey business are you getting up to? 英语翻译In our core line of business of photovoltaics in particu what are they made of though though怎么翻译? there are a lot of ________ (activity) in our school