解释What do you know about great scientists?

解释What do you know about great scientists? What great scientists do you know?What are they known for? Great!Do you know what 't__ 'means? What do you know about our company What do you know about Chinese wedding? What do you know about this organization? what do you know about man? 中文翻译 What do you know about AIDS? what do you know about the sea? what do you know about the What do you know about this university? What do you know about Halloween?