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The main differences between e-commerce and m-commerce are m（）, location tracking and security.（the ability to move or travel around easily）

The main differences between e-commerce and m-commerce are m（）, location tracking and security.（the ability to move or travel around easily）
正确答案：mobility

标签：现代邮政英语

上一条：C2B is the r（） of the traditional e-commerce model of B2C.（an exchange of positions or functions）

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