【pay，up是什么意思】pay，off，，pay，back，，pay，up，的用法区别？

pay off ,pay back ,pay up 的用法差别?

   pay off= 偿清(债务等)；发清(工钱)；付清. He took it upon himself to pay off the debt. 他自愿负责还清债务. pay back= 偿还；还钱； I rely on her to pay back the money. 我相信她会还钱. pay up=(全部或按时)付清；缴清(股款等)； Applicants are required to pay up the required course fee before course commencement date. 申请者必须在开课前缴付学费. 有用请采纳