请问buyer,soursing,purchasing之间的区别

buyer和purchasing clerk有什么区别 dealer market 和 buyer market 的区别是什么? 英语翻译the BUYER warrant they are capable of purchasing with fu procurement和purchasing 有何区别呢? 请问成功者与失败者之间的区别 请问idea,mind,opinion之间的区别 land purchasing expenses 和 land purchased expenses区别 Purchaser和buyer有什么区别? 请问watch,see,look三个词之间的本质区别! 请问 graduate,postgraduate,和undergraduate之间的区别 请问“tour,visit,travel"之间的意义及用法区别 请问：定性分析和定量分析之间的区别是什么?