请问desk research和field reserach有什么区别?急问~

请问desk research和field reserach有什么区别?急问~ 请问research Associate和Research Assistant有什么不同啊 请问desk和table的区别? 请问Do you work in the market research industry?和Household Income是什么意思? service desk 和 imformation desk 区别 research Research research speculation 和research可数吗对黑洞的研究刚刚开始,各种各样的假说层出不穷 The research of black holes is just beginning and speculations about them are endless.请问为什么research用的单数,speculation用的复数?他们 请问senior research fellow怎么翻译? desk 请问flap-over desk top如何解释? at the desk和 near the desk区别是什么 at the desk和on the desk区别是什么 at the desk和 at desk的区别是 search和research区别谢了! research与study的区别和用法 writing sample和research proposal 分别是什么?