了解国际运输实务，程序和成本。

Understanding of international freight practices, procedures and costs.

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所有这些工作都会增加开发和维护酒店手机应用程序的成本。

All of this greatly increases the cost of developing and maintaining the hotel mobile app.

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不过，最初的开发成本并不是事情的全部，还有其他的后续成本需要考虑，比如应用程序运行的维护成本和硬件成本。

However, the initial development cost is not the entire picture. There are other continuing costs, such as maintenance costs and the hardware costs to run the application.

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