Cross-boarder e-commerce theory and practice Cross-border e-commerce theory and practice 并列题名：Cross-boarder e-commerce theory and practice 并列题名：Cross-border e-commerce theory and practice Cross border e-commerce theory practice Cross-border E-commerce operation practice Cross-border e-commerce fundamental and practice Mobile commerce theory and practice 并列题名：Cross border e-commerce theory practice Cross-border e-commerce practice