Although tailored protocols are to meet the needs for some special applications, their development is expensive in time and money.
虽然采用专用的协议能满足特定应用的需要，但开发时间和费用非常大。
The cost is a combination of time and money for analysis, expensive downtime in production environments, stress, and a loss of confidence in the application and frameworks.
付出的代价包括用于进行分析的时间和资金、生产环境中开销巨大的停机时间、压力以及对应用程序和框架丧失信心。
Link building can be very expensive in terms of time and money.
链接建设是非常昂贵的时间和金钱。
Link building can be very expensive in terms of time and money.
链接建设是非常昂贵的时间和金钱。
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