Communication English for cross-border e-commerce Practical English for cross-border e-commerce Professional English for cross-border e-commerce Spoken English for cross-border e-commerce 并列题名：Spoken English for cross-border e-commerce Practical tutorial for cross-border e-commerce Logistics of cross-border e-commerce Introduction to cross-border e-commerce an overview of cross-border e-commerce Principle of cross-border E-commerce