什么是SELLING GENERAL ADMINISTRATION?

什么是SELLING GENERAL ADMINISTRATION? 什么是General 什么是General 什么是Cross－Selling? a general 什么是general form of a proposal for funding a charity selling是什么意思 selling a collectible online selling selling 这段话为什么是selling?不是sold?为什么是selling?Thomas Edison started work on the railway when he was twelve,selling(为什么是selling) newspapers... He makes a living____ selling newspapers. 什么是UN General Assembly中文意思 general General General general大还是captain大?A general ranks a captain. 谁能帮忙用英文解释一下什么是referral selling吗?