In general, raw sockets require the programmer to do the most work in creation, debugging, and maintenance of the communication code.

一般来说，原始套接字要求程序员在通信代码的创建、调试和维护中做最多的工作。

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Errors introduced early in the communication of requirements are the most costly system errors to correct, leading to patch development and increased maintenance costs.

在沟通需求的早期引入的错误是最难纠正的系统错误，会导致开发补丁，并增加维护成本。

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To organize and implement model selections, development and maintenance of national customs technology and equipment in respect of computers, network, communication and anti-counterfeiting.

组织实施全国海关计算机、网络、通信、防伪等技术和设备的选型、开发和维护。

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As part of the setting up process, five faculty and twenty five students of the Center for Communication Studies received basic training in the use of the radio equipment and maintenance of the facility.

UNESCO: MEDIA SERVICES

Before, students had to make one of two choices: to practice constant vigilance and maintenance of their public profiles online or risk exposing their sharing, web-surfing habits and communication with friends to their professors, employers and parents.

FORBES: Students, SnapChat, Wickr: Staying Private and Productive Online