弱点存在于系统的入口和出口。
Vulnerabilities exist at entry and exit points in the system.
效率在供应链的入口和出口点同您的市场相联系。
Efficiency comes into contact with your marketplace at the entry and exit points of the supply chain.
清单1展示了样板模块功能，定义了模块入口和出口函数。
Listing 1 presents the boilerplate module functions, defining the module entry and exit functions.
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